APA (7th ed.) Citation

AM, E. (2002). Volume and outcome -- it is time to move ahead. New England Journal of Medicine, 346(15), 1161.

Chicago Style (17th ed.) Citation

AM, Epstein. "Volume and Outcome -- It Is Time to Move Ahead." New England Journal of Medicine 346, no. 15 (2002): 1161.

MLA (9th ed.) Citation

AM, Epstein. "Volume and Outcome -- It Is Time to Move Ahead." New England Journal of Medicine, vol. 346, no. 15, 2002, p. 1161.