Borkenau, Franz
University of Michigan Press, 1962
Buku Teks
Nollau, Günther, 1911-1991, author
Frederick A. Praeger, 1961
Buku Teks
Foreign Language, 1960
Buku Teks
Keenan, George F., author
Harper & Row, 1964
Buku Teks
Takeuchi, Hiroshi, author
Nihon Jitsugyo Shuppansha, 1990
Buku Teks