APA način citiranja

Piper, D. W., & Fenton, B. H. (1965). pH stability and activity curves of pepsin with special reference to their clinical importance.

Čikaški stil citiranja

Piper, D W., i B H. Fenton. PH Stability and Activity Curves of Pepsin With Special Reference to Their Clinical Importance. 1965.

MLA način citiranja

Piper, D W., i B H. Fenton. PH Stability and Activity Curves of Pepsin With Special Reference to Their Clinical Importance. 1965.