Gayed, Riad, author
Elia's Modern Press, [date of publication not identified]
Buku Referensi
Zemanek, Karl
Springer , 1957
Buku Teks
Fischer, Watther, author
Heidelberg Carl Winter's Universitatsbuchhandlung 1921
Buku Teks
Baker, Don
Honolulu, University of Hawai'i Press, 2008
Buku Teks
Grisham, John, author
Gramedia Pustaka Utama, 2011
Buku Teks