Hamm, Hary
Frederick A. Praeger, 1963
Buku Teks
Hamm, Harry
Doubleday & Company, Inc., 1966
Buku Teks
Vitkovich, Victor
Foreign Languages Publishing House , 1954
Buku Teks
Hugo, V. (Victor), author
David Campbell Publishers, 1998
Buku Teks
Urquidi, Victor L.
University of California Press, 1962
Buku Teks