APA (7e ed.) Bronvermelding

Não informado. (2000). Tropical Products Institute. Tropical Products Institute.

Chicago (17e ed.) Bronvermelding

Não informado. Tropical Products Institute. London: Tropical Products Institute, 2000.

MLA (8e ed.) Bronvermelding

Não informado. Tropical Products Institute. Tropical Products Institute, 2000.

Let op: Deze citaties zijn niet altijd 100% accuraat.