Roemer, John E
Institute of International Studies, University of California, 1975
Buku Teks
edited by Beverly A. Allen, Christian S. Ward
Oceana, 1985
Buku Teks
edited by Beverly A. Allen, Christian S. Ward
Oceana, 1985
Buku Teks
Barnes, A. James, author
Irwin/McGraw-Hill, 2000
Buku Teks
Barnes, A. James, author
Richard D. Irwin, 1981
Buku Teks