MLA

Guzmán, Carlos A, et al. Pharmaceutical Biotechnology. Springer New York, 2009.

APA

Guzmán, C. A, Feuerstein, G. Z, Guzman, C. A, & Guzman, C. Alberto. (2009). Pharmaceutical Biotechnology. Springer New York.

Chicago

Guzmán, Carlos A., Giora Z Feuerstein, Carlos A Guzman, and Carlos Alberto Guzman. Pharmaceutical Biotechnology. : Springer New York, 2009.