APA (7th ed.) Citation

Systematics Association & Styles, B. T. (1986). Infraspecific classification of wild and cultivated plants. Published for the Systematics Association by Clarendon Press.

Chicago Style (17th ed.) Citation

Systematics Association and B. T. Styles. Infraspecific Classification of Wild and Cultivated Plants. Oxford: Published for the Systematics Association by Clarendon Press, 1986.

MLA (9th ed.) Citation

Systematics Association and B. T. Styles. Infraspecific Classification of Wild and Cultivated Plants. Published for the Systematics Association by Clarendon Press, 1986.