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توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Fischel, W. J. (1967). Ibn Khaldun in Egypt: His public functions and his historical research, 1382-1406; a study in Islamic historiography. University of California Press.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Fischel, Walter Joseph. Ibn Khaldun in Egypt: His Public Functions and His Historical Research, 1382-1406; a Study in Islamic Historiography. Berkeley: University of California Press, 1967.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Fischel, Walter Joseph. Ibn Khaldun in Egypt: His Public Functions and His Historical Research, 1382-1406; a Study in Islamic Historiography. University of California Press, 1967.