Tracklist
| A | You Don't Know (Tu No Sabes) |
| B | It's A Long Day (Es Un Largo Dia) |
Companies, etc.
- Record Company – RCA, S.A.
Other versions
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| N-S-78-56 | Marboo Whisnant | You Don't Know / It's A Long Day (7", Single) | Alvorada Internacional | N-S-78-56 | Portugal | 1973 |
| FR 40 029, FR 40029 | Marboo* | You Don't Know / It's A Long Day (7", Single) | Finger, Finger | FR 40 029, FR 40029 | France | 1974 |
| 2046 020 | Marboo* | You Don't Know / It's A Long Day (7", Single) | Finger | 2046 020 | Germany | 1974 |
