Gaya APA

Group, I. (2013). The New England Journal of Medicine Vol. 369 No.21 (Vol. 369 No.21 November 2013). United Kingdom: NEJM Group.

Gaya MLA

Group, Internasional.NEJM. "The New England Journal of Medicine Vol. 369 No.21". Vol. 369 No.21 November 2013 United Kingdom: NEJM Group, 2013. Text.