Charles W. Kegley and Eugene R. Wittkopf, editor
McGraw-Hill, [2001;2001, 2001]
Buku Teks SO
edited by Charles W. Kegley and Eugene R. Wittkopf
McGraw-Hill, 1992
Buku Teks SO
edited by Charles W. Kegley and Eugene R. Wittkopf
Random House, 1984
Buku Teks SO
Paul Kirkbride
John Wiley & Sons, 2001
Buku Teks SO
Rikza Anaupal Dahri, examiner
Sebelas Maret Unipersity Press, 1994
Buku Teks SO