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Dänemark| Label: | Dreamland Records 2090485 |
| Genre: | Rock |
| Style: | Hard Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Rock Hard » Written-By: M. Chapman/ N. Chinn | 3:23 |
| B | State Of Mind » Written-By: L. Tuckey, S. Quatro | 3:01 |
| Label: | PolyGram Records Pty. Limited 2090 485 |
| Genre: | Rock |
| Style: | Hard Rock |
| Format: | Vinyl (7" , 45 RPM) |
| A | Rock Hard » Written-By: M. Chapman/N. Chinn | 3:23 |
| B | State Of Mind » Written-By: L. Tuckey, S. Quatro | 3:01 |
| Label: | Dreamland Records 2090 485 |
| Genre: | Rock |
| Style: | Glam |
| Format: | Vinyl (7") |
| A | Rock Hard » Songwriter: M. Chapman/N. Chinn | 3:18 |
| B | State Of Mind » Songwriter: L. Tuckey, S. Quatro | 2:59 |
| Label: | Dreamland Records 20 90 485 |
| Genre: | Rock |
| Style: | Glam |
| Format: | Vinyl (7" , 45 RPM , Single) |
| A | Rock Hard » Songwriter: M. Chapman/N. Chinn | |
| B | State Of Mind » Songwriter: L. Tuckey, S. Quatro |
| Label: | Dreamland Records 2090 485 |
| Genre: | Rock |
| Style: | Hard Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Rock Hard » Written-By: M. Chapman/ N. Chinn | 3:23 |
| B | State Of Mind » Written-By: Tuckey, Quatro | 3:01 |
| Label: | Dreamland Records DLSP 6 |
| Genre: | Rock |
| Style: | Hard Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Rock Hard » Written-By: M. Chapman/ N. Chinn | 3:23 |
| B | State Of Mind » Written-By: Tuckey, Quatro | 3:01 |
| Label: | PolyGram Do Brasil 2090 485 |
| Genre: | Rock |
| Style: | Hard Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Rock Hard » Written-By: M. Chapman/ N. Chinn | 3:23 |
| B | State Of Mind » Written-By: Tuckey, Quatro | 3:01 |
| Label: | Dreamland Records DL 104 |
| Genre: | Rock |
| Style: | Hard Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Rock Hard » Written-By: M. Chapman - N. Chinn | 3:23 |
| B | State Of Mind » Written-By: L. Tuckey, S. Quatro | 3:01 |
| Label: | Dreamland Records 1232 |
| Genre: | Rock |
| Style: | Hard Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Rock Hard » Written-By: M. Chapman/ N. Chinn | 3:18 |
| B | Wish Upon Me » Written-By: D. Kreams, E. Brown, T. Straley | 2:56 |
| Label: | Dreamland Records DL 104 |
| Genre: | Rock |
| Style: | Hard Rock |
| Format: | Vinyl (7" , Single , 45 RPM , Promo) |
| A | Rock Hard (Mono) | 3:23 |
| B | Rock Hard (Stereo) | 3:23 |
| Label: | Dreamland Records 7DW00001 |
| Genre: | Rock |
| Format: | Vinyl (7") |
| A | Rock Hard | |
| B | State Of Mind |
| Label: | Dreamland Records 2090 485 |
| Genre: | Rock |
| Style: | Hard Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Rock Hard » Written-By: M. Chapman/ N. Chinn | 3:23 |
| B | State Of Mind » Written-By: L. Tuckey, S. Quatro | 3:01 |
| Label: | Dreamland Records 2090485.8 |
| Genre: | Rock |
| Style: | Hard Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Rock Hard | 3:18 |
| B | Estado Mental | 2:59 |
| Label: | Dreamland Records 2090 485 |
| Genre: | Rock |
| Style: | Hard Rock |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | Rock Hard » Written-By: M. Chapman/ N. Chinn | 3:23 |
| B | State Of Mind » Written-By: L. Tuckey, S. Quatro | 3:01 |
