Bode, Boyd Henry
D.C Heath and Company, 1940
Buku Teks
Lesesne, J. Mauldin
University of South Carolina Press , 1970
Buku Teks
Campbell, W. J., author
The Law Book, 1954
Buku Teks
Lucas, jo Desha
The Foundation Press, Inc., 1978
Buku Teks
Frederickson, H. George, author
LP3ES, 1983
Buku Teks