APA citiranje

Gunnison, J. B., Fraher, M. A., Pelcher, E. A., & Jawetz, E. (1968). Penicillin-resistant Variants of Pneumococci.

Citação norma Chicago

Gunnison, Janet B., Margaret A. Fraher, Elisabeth A. Pelcher, and Ernest Jawetz. Penicillin-resistant Variants of Pneumococci. 1968.

MLA citiranje

Gunnison, Janet B., Margaret A. Fraher, Elisabeth A. Pelcher, and Ernest Jawetz. Penicillin-resistant Variants of Pneumococci. 1968.