APA引文

Otto, C. M. (2003). Timing of surgery in mitral regurgitation. Copyright 2003 by Heart.

Citação norma Chicago

Otto, Catherine M. Timing of Surgery in Mitral Regurgitation. Copyright 2003 by Heart, 2003.

MLA引文

Otto, Catherine M. Timing of Surgery in Mitral Regurgitation. Copyright 2003 by Heart, 2003.

警告：這些引文格式不一定是100％准確.