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| Label: | CBS 12 PRM 045 |
| Genre: | Electronic, Rock |
| Style: | New Wave, Synth-pop |
| Format: | Vinyl (12" , Limited Edition) |
| A | Who Can It Be Now? | 3:22 |
| B | Down Under | 3:44 |
| Label: | Epic 07 5P-196 |
| Genre: | Rock |
| Style: | New Wave, Pop Rock |
| Format: | Vinyl (7" , 45 RPM , Single) |
| A | Who Can It Be Now? | 3:23 |
| B | I Can See It In Your Eyes | 3:32 |
| Label: | Columbia AS 1577 |
| Genre: | Electronic, Rock |
| Style: | New Wave, Synth-pop |
| Format: | Vinyl (12") |
| A | Who Can It Be Now? | 3:20 |
| B | Down Under | 2:34 |
| Label: | CBS BS-35,040 |
| Genre: | Rock |
| Style: | Pop Rock |
| Format: | Vinyl (12" , 33 ⅓ RPM , Limited Edition) |
| A | ¿ Quien Puede Ser Ahora ? (Who Can It Be Now ?) | 5:33 |
| B | Lejano Puerto (Down Under) | 5:50 |
| Label: | Columbia AS 1515 |
| Genre: | Electronic |
| Style: | New Wave |
| Format: | Vinyl (12" , Promo) |
| A | Who Can It Be Now? | 3:20 |
| B | Who Can It Be Now? | 3:20 |
| Label: | Columbia 18-02888 |
| Genre: | Rock, Pop |
| Style: | New Wave, Pop Rock |
| Format: | Vinyl (7") |
| A | Who Can It Be Now? » Written-By: C. Hay | 3:20 |
| B | Anyone For Tennis » Written-By: C. Hay, G. Ham, J. Speiser, J. Rees, R. Strykert | 3:00 |
| Label: | Collectables 53-02888 |
| Genre: | Rock, Pop |
| Style: | New Wave, Pop Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Who Can It Be Now? » Written-By: C. Hay | 3:20 |
| B | Anyone For Tennis » Written-By: C. Hay, G. Ham, J. Speiser, J. Rees, R. Strykert | 3:00 |
| Label: | Star Record 002412 82 |
| Genre: | Pop, Rock |
| Format: | Vinyl (12" , Limited Edition , 33 ⅓ RPM) |
| A | Who Can It Be Now? (Re-Remix) | 6:35 |
| AA | Who Can It Be Now? (Re-Remix) | 7:13 |
| Label: | CBS A-1611 |
| Genre: | Rock, Pop |
| Style: | New Wave, Pop Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Who Can It Be Now? » Written-By: Hay | 3:24 |
| B | Anyone For Tennis? » Written-By: Men At Work | 2:58 |
| Label: | Columbia AS 1445 |
| Genre: | Electronic, Pop |
| Style: | New Wave |
| Format: | Vinyl (12" , Promo , White Label) |
| A | Who Can It Be Now? | |
| B | Who Can It Be Now? |
| Label: | CBS CBS A 1611 |
| Genre: | Rock |
| Style: | New Wave |
| Format: | Vinyl (7" , Single , Promo) |
| A | Quién Puede Ser Ahora? (Who Can It Be Now?) » Written-By: Hay | 3:24 |
| B | Anyone For Tennis » Written-By: M.A.W | 2:58 |
| Label: | CBS Records Australia BA222827 |
| Genre: | Rock |
| Style: | Pop Rock |
| Format: | Vinyl (7" , Single) |
| A | Who Can It Be Now? | |
| B | Anyone For Tennis? |
| Label: | Columbia C4-8480 |
| Genre: | Rock |
| Style: | Pop Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Who Can It Be Now? » Written-By: Colin Hay | 3:22 |
| B | A Montage (Down Under / Be Good Johnny / Underground) » Written-by [All Tracks]: Hay » Written-by [Be Good Johnny]: Ham » Written-by [Down Under]: Strykert | 4:30 |
| Label: | Epic EPC A2392 |
| Genre: | Rock |
| Style: | Pop Rock |
| Format: | Vinyl (7" , Single) |
| A | Who Can It Be Now » Written-By: Hay | |
| B | Anyone For Tennis » Written-By: Men At Work |
| Label: | CBS A-12.1611 |
| Genre: | Rock |
| Style: | Pop Rock |
| Format: | Vinyl (12" , Maxi-Single , 33 ⅓ RPM) |
| A | Who Can It Be Now? » Written-By: Colin Hay | 3:22 |
| B | Anyone For Tennis? » Written-By: Men At Work | 2:58 |
| Label: | CBS BA222827 |
| Genre: | Pop, Rock |
| Style: | Pop Rock |
| Format: | Vinyl (Single , 45 RPM , 7") |
| A | Who Can It Be Now? » Words By, Music By: Hay | |
| B | Anyone For Tennis? » Music By: M.A.W. |
| Label: | Columbia AS 1577 |
| Genre: | Electronic, Rock |
| Style: | New Wave, Synth-pop |
| Format: | Vinyl (12" , Promo) |
| A | Who Can It Be Now? | 3:20 |
| B | Down Under | 2:34 |
| Label: | CBS A-1611 |
| Genre: | Rock, Pop |
| Style: | Pop Rock, New Wave |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Who Can It Be Now? | |
| B | Anyone For Tennis? |
| Label: | CBS Columbia CSR 1213 |
| Genre: | Rock, Pop |
| Style: | Pop Rock |
| Format: | Vinyl (7" , 45 RPM , Single) |
| A | Who Can It Be Now? (Quién Puede Ser Ahora?) » Written-By: Colin Hay | |
| B | Touching The Untouchables (Tocando Los Intocables) » Written-By: C. Hay, R. Strykert |
| Label: | Columbia 53-02888 |
| Genre: | Rock, Pop |
| Style: | New Wave, Pop Rock |
| Format: | Vinyl (7" , Single , 45 RPM , Reissue) |
| A | Who Can It Be Now? » Written-By: C. Hay | 3:20 |
| B | Anyone For Tennis » Written-By: C. Hay, G. Ham, J. Speiser, J. Rees, R. Strykert | 3:00 |
| Label: | CBS CBSA 1611 |
| Genre: | Rock, Pop |
| Style: | New Wave, Pop Rock |
| Format: | Vinyl (7" , 45 RPM) |
| A | Who Can It Be Now? » Written-By: Hay | 3:24 |
| B | Anyone For Tennis? » Written-By: Men At Work | 2:58 |
| Label: | CBS CBS A-1611 |
| Genre: | Rock, Pop |
| Style: | New Wave |
| Format: | Vinyl (7" , Single) |
| A | Who Can It Be Now? (¿Quien Puede Ser Ahora?) | 3:24 |
| B | Anyone For Tennis | 2:58 |
| Label: | CBS Sampler 41 |
| Genre: | Electronic, Pop |
| Style: | New Wave |
| Format: | Vinyl (12" , Sampler) |
| A | Who Can It Be Now? | |
| B | Who Can It Be Now? |
| Label: | CBS A-1611 |
| Genre: | Rock, Pop |
| Style: | New Wave, Pop Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Who Can It Be Now? » Written-By: Hay | 3:24 |
| B | Anyone For Tennis? » Written-By: Men At Work | 2:58 |