APA (7th ed.) Citation

M, O. (2008). The era of targeted therapies. American family physician, 77(3), 294.

Chicago Style (17th ed.) Citation

M, Offermann. "The Era of Targeted Therapies." American Family Physician 77, no. 3 (2008): 294.

MLA (9th ed.) Citation

M, Offermann. "The Era of Targeted Therapies." American Family Physician, vol. 77, no. 3, 2008, p. 294.