MLA

Léna, Pierre, et al. Observational Astrophysics. Springer Berlin Heidelberg, 2012.

APA

Léna, P., Lebrun, F., Lena, P., Mignard, F., Pelat, D., Rouan, D., Lyle, S., & Mugnier, L. (2012). Observational Astrophysics. Springer Berlin Heidelberg.

Chicago

Léna, Pierre, François Lebrun, Pierre Lena, François Mignard, Didier Pelat, Daniel Rouan, Stephen Lyle, and Laurent Mugnier. Observational Astrophysics. : Springer Berlin Heidelberg, 2012.