Lewis, Mervyn Keith
Edward Elgar, 2001
Buku Teks
Ullmann, Manfred
Edinburgh University Press, 1978
Buku Teks
Yasin Hamid Safadi
Thames and Hudson, 1978
Buku Referensi
Khomeini, Ayatollah Ruhollah
Manor Books, 1979
Buku Teks
Karachi ( Pakistan ) : Hamdard Fondation Press
Majalah, Jurnal, Buletin