Pai, R. G., & Varadarajan, P. (2007). Echocardiography board review: 400 multiple choice questions with discussion. John Wiley & Sons.
芝加哥风格引文Pai, Ramdas G., 与 Padmini Varadarajan. Echocardiography Board Review: 400 Multiple Choice Questions with Discussion. Chichester, West Sussex, England ; Hoboken, NJ: John Wiley & Sons, 2007.
MLA引文Pai, Ramdas G., 与 Padmini Varadarajan. Echocardiography Board Review: 400 Multiple Choice Questions with Discussion. John Wiley & Sons, 2007.
警告：这些引文格式不一定是100％准确.