APA (7th ed.) Citation

Coursey, D. G. (1967). Yams: An account of the nature, origins, cultivation and utilisation of Dioscoreaceae. Longmans.

Chicago Style (17th ed.) Citation

Coursey, D. G. Yams: An Account of the Nature, Origins, Cultivation and Utilisation of Dioscoreaceae. London: Longmans, 1967.

MLA (9th ed.) Citation

Coursey, D. G. Yams: An Account of the Nature, Origins, Cultivation and Utilisation of Dioscoreaceae. Longmans, 1967.

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