Charlton, Ruth
Lawbook, 2004
Buku Teks
Kurtz, Max
McGraw-Hill, 1991
Buku Referensi
edited by Frederick C. Allard
McGraw-Hill, 1990
Buku Referensi
edited by Frederick C. Allard
McGraw-Hill, 1989
Buku Referensi
Chaterine E. Burns, Nancy Barber, Margaret A. Brady, Ardys M. Dunn
W.B. Saunders Company, 1996
Buku Referensi