Style de citation APA (7e éd.)

Polunin, O., & Everard, B. (1969). Flowers of Europe: A field guide. Oxford University Press.

Style de citation Chicago (17e éd.)

Polunin, Oleg, et Barbara Everard. Flowers of Europe: A Field Guide. London [et al.]: Oxford University Press, 1969.

Style de citation MLA (9e éd.)

Polunin, Oleg, et Barbara Everard. Flowers of Europe: A Field Guide. Oxford University Press, 1969.