APA
(11998). The New England Journal of Medicine. U.S.A: The Massachusetts Medical Society.
Chicago
11998. The New England Journal of Medicine. U.S.A: The Massachusetts Medical Society.
Harvard
(11998). The New England Journal of Medicine. U.S.A: The Massachusetts Medical Society.
MLA
The New England Journal of Medicine. U.S.A: The Massachusetts Medical Society. 11998.