Atkinson, Toby D., author
Springfield, 1994
Buku Referensi
Monk, Keith, author
McGraw-Hill, 1989
Buku Teks
AMACOM, 1977
Buku Teks
Syaiful Watni, editor; Suradji, editor
Pengayoman, 2003
Buku Teks
Garrett, James J.
Practising Law Institute, 1978
Buku Teks