APA (7th ed.) Citation

Degras, L., & Coste, R. (1993). The yam: A tropical root crop. Macmillan.

Chicago Style (17th ed.) Citation

Degras, Lucien, and Rene Coste. The Yam: A Tropical Root Crop. London: Macmillan, 1993.

MLA (9th ed.) Citation

Degras, Lucien, and Rene Coste. The Yam: A Tropical Root Crop. Macmillan, 1993.

Warning: These citations may not always be 100% accurate.