Fischel, W. J. (1967). Ibn Khaldun in Egypt: His public functions and his historical research. University of California Press.
Lua i Stíl Chicago (17ú heag.)Fischel, Walter Joseph. Ibn Khaldun in Egypt: His Public Functions and His Historical Research. Berkeley: University of California Press, 1967.
Lua MLA (9ú heag.)Fischel, Walter Joseph. Ibn Khaldun in Egypt: His Public Functions and His Historical Research. University of California Press, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.