Não informado. (1947). Cacao Information Bulletin. Interamerican Institute of Agricultural Sciences.
Chicago (17e ed.) BronvermeldingNão informado. Cacao Information Bulletin. Turrialba, Costa Rica: Interamerican Institute of Agricultural Sciences, 1947.
MLA (8e ed.) BronvermeldingNão informado. Cacao Information Bulletin. Interamerican Institute of Agricultural Sciences, 1947.
Let op: Deze citaties zijn niet altijd 100% accuraat.