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Dänemark| Label: | Hansa International 104 351-100 |
| Genre: | Electronic |
| Style: | Disco |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | I Don't Know » Written-By: D. Kawohl, M. Davis, M. Björklund | 4:24 |
| B | Every Day Will Be Like A Holiday » Written-By: Jones Booker T. Jr., B. William | 3:27 |
| Label: | Hansa International 600 613 |
| Genre: | Electronic |
| Style: | Disco |
| Format: | Vinyl (12" , Single , 45 RPM) |
| A | I Don't Know (Long Version) » Written-By: D. Kawohl, M. Davis, M. Bjoerklund | 8:06 |
| B | Every Day Will Be Like A Holiday » Written-By: Jones Booker T. Jr., B. William | 3:30 |
| Label: | Ariola ARI 8227 |
| Genre: | Electronic |
| Style: | Disco |
| Format: | Vinyl (7" , Single , 45 RPM) |
| A | I Don't Know » Written-By: D. Kawohl, M. Davis, M. Björklund | 4:24 |
| B | Every Day Will Be Like A Holiday » Written-By: Jones Booker T. Jr., B. William | 3:27 |
