APA (7th ed.) Citation

Yeo, P. (1985). Hardy Geraniums. Croom Helm [u.a.].

Chicago Style (17th ed.) Citation

Yeo, Peter. Hardy Geraniums. London [u.a.]: Croom Helm [u.a.], 1985.

MLA (9th ed.) Citation

Yeo, Peter. Hardy Geraniums. Croom Helm [u.a.], 1985.

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