MLA

Hofmann, F, et al. Stem Cells. Springer Berlin Heidelberg, 2006.

APA

Hofmann, F., Boheler, K. R, Wobus, A. M, & Boheler, K. (2006). Stem Cells. Springer Berlin Heidelberg.

Chicago

Hofmann, F., Kenneth R Boheler, Anna M Wobus, and Kenneth Boheler. Stem Cells. : Springer Berlin Heidelberg, 2006.