APA (7th ed.) Citation

Pilbeam, J. (2011). Echinocereus. British Cactus & Succulent Soc.

Chicago Style (17th ed.) Citation

Pilbeam, John. Echinocereus. Hornchurch, Essex: British Cactus & Succulent Soc, 2011.

MLA (9th ed.) Citation

Pilbeam, John. Echinocereus. British Cactus & Succulent Soc, 2011.

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