APA (7th ed.) Citation

Cribb, P., & Butterfield, I. (1988). The genus Pleione (1. publ.). Helm u.a.

Chicago Style (17th ed.) Citation

Cribb, Phillip, and Ian Butterfield. The Genus Pleione. 1. publ. Bromley: Helm u.a, 1988.

MLA (9th ed.) Citation

Cribb, Phillip, and Ian Butterfield. The Genus Pleione. 1. publ. Helm u.a, 1988.