Coyle, John J. (John Joseph), 1935-, author
South Western Cengage Learning, 2011
Buku Teks
Germane, Gayton E., author
McGraw-Hill, 1963
Buku Teks
edited by George E. Gray, Lester A. Hoel
Prentice-Hall, 1979
Buku Teks
Greene, Katrine
New York: Institut of Pacific Relations, 1941
Buku Teks
Coyle, John J. (John Joseph), 1935-, author
South-Western College, 2000
Buku Teks