MLA

Krentz, Andrew, and Krentz. Drug Therapy for Type 2 Diabetes. Springer Healthcare UK, 2012.

APA

Krentz, A., & Krentz, K. (2012). Drug Therapy for Type 2 Diabetes. Springer Healthcare UK.

Chicago

Krentz, Andrew, and Krentz. Drug Therapy for Type 2 Diabetes. : Springer Healthcare UK, 2012.