Yahya Armajani
Prentice-Hall, [date of publication not identified]
Buku Teks SO
Goldschmidt, Arthur
Westview Press, 1983
Buku Teks SO
Goldschmidt, Arthur
Westview Press, 1983
Buku Teks SO
Makris, G.p.
Blackwell Publishing, 2007
Buku Teks
Lenczowski, George
Cornell University Press, 1956
Buku Teks