Schaefer, Richard T, author
Salemba Empat, 2013
Buku Teks
Johnson, Doyle Paul, author
Gramedia Pustaka Utama, 1994
Buku Teks
Horton, Paul B., author
McGraw-Hill , 1984
Buku Teks
Horton, Paul B., author
McGraw-Hill, 1980
Buku Teks
Soerjono Soekanto, author
RajaGrafindo Persada, 2006
Buku Teks