APA (7th ed.) Citation

ScienceDirect (Online service), Wright, P., & Anderson, P. M. (2001). Nitrogen excretion. Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Patricia Wright, and Paul M. Anderson. Nitrogen Excretion. San Diego: Academic Press, 2001.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Nitrogen Excretion. Academic Press, 2001.