Steingass, F.
Gaurav Publishing House, 1986
Buku Referensi
Catholic Press, 1953
Buku Referensi
compiled and translated by Ismail Mazhar
The Renaissance Bookshop, 1950
Buku Referensi
Wortabet, John
Frederick Ungar Publishing, 1954
Buku Referensi
edited by N.S. Doniach
Oxford University Press, 1992
Buku Referensi