edited by Richard L. Perry and John C. Cooper
American Bar Foundation, 1964
Buku Teks
Way, H. Frank
McGraw-Hill, 1976
Buku Teks
Way, H. Frank
McGraw-Hill, 1964
Buku Teks
Newman, Edwin S.
Oceana Publications,Inc., 1979
Buku Teks
Dumbauld, Edward
University of Oklahoma Press, 1946
Buku Teks