Christian Soe
McGraw-Hill, 2004
Buku Teks
Barringron, Lowell
Wadsworth and Cengage Learning, 2013
Buku Teks
edited by Roy C. Macridis and Bernard E. Brown
Wadsworth, 1990
Buku Teks
edited by Roy C. Macridis and Bernard E. Brown
Wadsworth, 1996
Buku Teks
edited by Roy C. Macridis, Bernard E. Brown
Wadsworth, 1972
Buku Teks