Chr.L.M penders
University of Queensland Press, 1977
Buku Teks
Desai, A.R.
Popular Book Depot, 1954
Buku Teks
Laqueur, Walter Z.
Frederiock A. Praeger, 1956
Buku Teks
Strauss, Erich, 1911-1981
Methuen , 1951
Buku Teks
Evera, Stephen Van
[publisher not identified], [date of publication not identified]
Buku Teks