Arnold, H.J.P.
Dufour Editions, 1966
Buku Teks
Echavarria, Jose Medina
New York, N.Y., Unesco
Buku Teks
Muscat, Robert J.
Praeger, 1966
Buku Teks
Al-Feel, Muhammad Rashid
Ministry of Culture and Guidance, 1964
Buku Teks SO
Andrus, J. Russell
Stanford University Press , 1947
Buku Teks