APA (7th ed.) Citation

Hooper, J. N. A., Soest, R. W. M., & Willenz, P. (2002). Systema Porifera: A Guide to the Classification of Sponges. Springer US.

Chicago Style (17th ed.) Citation

Hooper, John N. A., Rob W. M. Soest, and Philippe Willenz. Systema Porifera: A Guide to the Classification of Sponges. Boston, MA: Springer US, 2002.

MLA (9th ed.) Citation

Hooper, John N. A., et al. Systema Porifera: A Guide to the Classification of Sponges. Springer US, 2002.