Zwemer, S. M. (1939). Studies in popular Islam: A collection of papers dealing with the superstitions and beliefs of the common people. The Sheldon Press; The Macmillan Company.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Zwemer, Samuel Marinus. Studies in Popular Islam: A Collection of Papers Dealing with the Superstitions and Beliefs of the Common People. London, New York: The Sheldon Press; The Macmillan Company, 1939.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Zwemer, Samuel Marinus. Studies in Popular Islam: A Collection of Papers Dealing with the Superstitions and Beliefs of the Common People. The Sheldon Press; The Macmillan Company, 1939.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.