توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Zawiah Kassim. (2014). Comparison between modified mallampati classification, upper lip bite test and neck circumference in predicting difficult intubation in obese patients. Universiti Kebangsaan Malaysia.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Zawiah Kassim. Comparison Between Modified Mallampati Classification, Upper Lip Bite Test and Neck Circumference in Predicting Difficult Intubation in Obese Patients. Kuala Lumpur: Universiti Kebangsaan Malaysia, 2014.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Zawiah Kassim. Comparison Between Modified Mallampati Classification, Upper Lip Bite Test and Neck Circumference in Predicting Difficult Intubation in Obese Patients. Universiti Kebangsaan Malaysia, 2014.