MLA

Askins, Robert A, et al. Saving Biological Diversity. Springer US, 2008.

APA

Askins, R. A, Askins, R., Dreyer, G. D, Foster, D. R, Visgilio, G. R, & Whitelaw, D. M. (2008). Saving Biological Diversity. Springer US.

Chicago

Askins, Robert A., Robert Askins, Glenn D Dreyer, David R Foster, Gerald R Visgilio, and Diana M Whitelaw. Saving Biological Diversity. : Springer US, 2008.