Goldziher, Ignaz, author
E.J. Brill , 1956
Buku Teks
Esslemont, J.E.
Baha'i , 1950
Buku Teks
Thabathabai, Allamah Sayyid Muhammad Husain, author
Manila Al-Hidaya 1995,
Buku Teks
Athenaion , 1971
Buku Teks
Umaruddin Masdar, author
Ram-Laijha , 1950
Buku Teks