MLA

Köhrer, Caroline, et al. Protein Engineering. Springer Berlin Heidelberg, 2009.

APA

Köhrer, C., Gross, H., Koehrer, C., & RajBhandary, U. L. (2009). Protein Engineering. Springer Berlin Heidelberg.

Chicago

Köhrer, Caroline, H.J Gross, Caroline Koehrer, Caroline Köhrer, and Uttam L RajBhandary. Protein Engineering. : Springer Berlin Heidelberg, 2009.