توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Azar, R. R., Cote, G. A., Hovis, C. E., Edmundowicz, S. A., Jonnalagadda, S. S., & Mullady, D. (2010). Predicting Difficult Bile Duct Cannulation: Accuracy of Endoscopic Visualization of the Papilla to Predict Cannulation Difficulty.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Azar, Riad R., Gregory A. Cote, Christine E. Hovis, Steven A. Edmundowicz, Sreenivasa S. Jonnalagadda, و Daniel Mullady. Predicting Difficult Bile Duct Cannulation: Accuracy of Endoscopic Visualization of the Papilla to Predict Cannulation Difficulty. 2010.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Azar, Riad R., et al. Predicting Difficult Bile Duct Cannulation: Accuracy of Endoscopic Visualization of the Papilla to Predict Cannulation Difficulty. 2010.