APA ציטוט

Fraser, K., & Sugden, B. A. (1977). Second closed mitral valvotomy for recurrent mitral stenosis.

Citação norma Chicago

Fraser, K., and B A. Sugden. Second Closed Mitral Valvotomy for Recurrent Mitral Stenosis. 1977.

ציטוט MLA

Fraser, K., and B A. Sugden. Second Closed Mitral Valvotomy for Recurrent Mitral Stenosis. 1977.