Thabathabai, Allamah Sayyid Muhammad Husain, author
Manila Al-Hidaya 1995,
Buku Teks
Haykal, Muhammad Husayn
Al-Shirkat al-'Arabiyyah, 1959
Buku Teks
Tafuri, Manfredo, author
MIT Press, 1995
Buku Teks
Lucas, Henry S., author
Harper and Row, 1960
Buku Teks
edited by Leonard Dean
Prentice-Hall, 1953
Buku Teks