APA (7th ed.) Zitazioa
Dahlgreen, B. (1923). Cacao. Field Museum of Natural History, Department of Botany.
Chicago Style (17th ed.) Zitazioa
Dahlgreen, B.E. Cacao. Chicago: Field Museum of Natural History, Department of Botany, 1923.
MLA (9th ed.) Zitazioa
Dahlgreen, B.E. Cacao. Field Museum of Natural History, Department of Botany, 1923.
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