Cita APA (7th ed.)
Dahlgreen, B. (1923). Cacao. Field Museum of Natural History, Department of Botany.
Cita Chicago (17th ed.)
Dahlgreen, B.E. Cacao. Chicago: Field Museum of Natural History, Department of Botany, 1923.
Cita MLA (9th ed.)
Dahlgreen, B.E. Cacao. Field Museum of Natural History, Department of Botany, 1923.
Atenció: Aquestes cites poden no estar 100% correctes.