APA (7th ed.) Citation

Polunin, O., & Smythies, B. (1973). Flowers of South-West Europe: A field guide.

Chicago Style (17th ed.) Citation

Polunin, Oleg, and B.E Smythies. Flowers of South-West Europe: A Field Guide. Oxford, 1973.

MLA (8th ed.) Citation

Polunin, Oleg, and B.E Smythies. Flowers of South-West Europe: A Field Guide. 1973.

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