Delaet, Debra L., 1968-, author
Thomson Wadsworth, 2006
Buku Teks
Delaet, Debra L., 1968-, author
Cengage Learning, 2015
Buku Teks
Forsythe, David P., 1941-, author
University of Nebraska Press, 1983
Buku Teks
Modelski, George
Free Press, 1972
Buku Teks
Kegley, Charles W. (Charles William), Jr., author
Wardsworth, 2010
Buku Teks