APA ציטוט

Ross, A. P., & Brill, G. C. (1974). Massive Upper Gastrointestinal Bleeding.

Citação norma Chicago

Ross, Alexander P., and G. C. Brill. Massive Upper Gastrointestinal Bleeding. 1974.

ציטוט MLA

Ross, Alexander P., and G. C. Brill. Massive Upper Gastrointestinal Bleeding. 1974.