APA (7th ed.) Citation

Cribb, P., Bates, M., & Green, P. (1997). The genus cypripedium. Timber Press.

Chicago Style (17th ed.) Citation

Cribb, Phillip, Mary Bates, and Peter Green. The Genus Cypripedium. Portland: Timber Press, 1997.

MLA (8th ed.) Citation

Cribb, Phillip, et al. The Genus Cypripedium. Timber Press, 1997.

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