Não informado. (2000). Tropical Products Institute. Tropical Products Institute.
Chicago-Zitierstil (17. Ausg.)Não informado. Tropical Products Institute. London: Tropical Products Institute, 2000.
MLA-Zitierstil (8. Ausg.)Não informado. Tropical Products Institute. Tropical Products Institute, 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.