Cita APA (7th ed.)
ebrary, Inc, Walters, T., & Osborne, R. (2004). Cycad classification: Concepts and recommendations. CABI Pub..
Cita Chicago (17th ed.)
ebrary, Inc, Terrence Walters, i Roy Osborne. Cycad Classification: Concepts and Recommendations. Wallingford: CABI Pub., 2004.
Cita MLA (9th ed.)
ebrary, Inc, et al. Cycad Classification: Concepts and Recommendations. CABI Pub., 2004.
Atenció: Aquestes cites poden no estar 100% correctes.