Gaya APA

Group, I. (2014). The New England Journal of Medicine Vol. 372 No 21 (Vol. 372 No 21 November 20 , 2014). United Kingdom: NEJM Group.

Gaya MLA

Group, Internasional.NEJM. "The New England Journal of Medicine Vol. 372 No 21". Vol. 372 No 21 November 20 , 2014 United Kingdom: NEJM Group, 2014. Jurnal Internasional.