Sanderson, Stephen K., author
Rajawali, 1993
Buku Teks
Sanderson, Stephen K., author
RajaGrafindo Persada, 2000
Buku Teks
Soerjono Soekanto, author
Ghalia Indonesia, 1982
Buku Teks
Horton, Paul B., author
McGraw-Hill , 1984
Buku Teks
Horton, Paul B., author
McGraw-Hill, 1980
Buku Teks