Rossiter, Clinton, 1917-1970, author
A Harbinger Book, 1963
Buku Teks
Foreign Language Press, 1959
Buku Teks
Boudreau, Vince, author
Cambridge University Press, 2004
Buku Teks
Strausz-Hupe, Robert, author
McGraw-Hill, 1954
Buku Teks
Feith, Herbert
Cornell University Press, 1968
Buku Teks