MLA

Schaffer, William, and William M Shafer. Antimicrobial Peptides and Human Disease. Springer Berlin Heidelberg, 2006.

APA

Schaffer, W., & Shafer, W. M. (2006). Antimicrobial Peptides and Human Disease. Springer Berlin Heidelberg.

Chicago

Schaffer, William, and William M Shafer. Antimicrobial Peptides and Human Disease. : Springer Berlin Heidelberg, 2006.