Sherman, Howard J., author
Harper and Row, 1989
Buku Teks
Westhues, Kenneth, author
McGraw-Hill, 1972
Buku Teks
Peursen, Cornelis Anthonie van, 1920-, author
Kanisius, 1984
Buku Teks
Soerjono Soekanto, author
Rajawali , 1986
Buku Teks
edited by Tracey Skelton, Gill Valentine
Routledge , 1998
Buku Teks