Babb, Hugh W., author
Harper and Row , 1969
Buku Teks
Bays, Alfred W., author
Macmillan, 1931
Buku Teks
Ashcroff, John D., author
South-Western, 1981
Buku Teks
Wyat, John W., author
[s.n.], [s.a.]
Buku Teks
Upp, Robert D., author
Harcourt, Brace Jovanovich Legal and Professional Publications, 1984
Buku Teks