Catroux, Georges
Hachette, [1952]
Buku Teks
Mosely, Philip E., author
Vintage Books, 1960
Buku Teks
McWhinney, Edward, author
A.W. Sythoff, 1964
Buku Teks
Barghoorn, Frederick C.
Princeton University Press, 1960
Buku Teks
Pentony, Devere E.
Chandler Pub. Co., 1962
Buku Teks