edited by James C. Tuttle
American Bar Association, 1978
Buku Teks SO
Cohen, Theodore
Free Press, 1987
Buku Teks SO
Phillips, Christopher
Oxford University Press, 2016
eBooks
by Susan Welch ... [and others]
Thomson, 2006
Buku Teks SO
Sayre, Wallace S.
Barnes & Noble, 1964
Buku Teks SO