edited by Arthur S. Banks, Alan J. Day, Thomas C. Muller
CSA Publications, 1997
Buku Referensi
edited by Arthur S. Banks, Rebecca T. Granger, Marilyn L. Green
McGraw-Hill, 1976
Buku Teks
The Law Book Company, 1997
Buku Teks
Hodgson, Barbara B., author
W.B. Saunders, 1997
Buku Referensi
Harper & Row, 1965
Buku Teks SO