Mott, George Fox
Barnes & Noble, Inc., 1957
Buku Teks
McGarry, Daniel D., author
Littlefield, Adams, 1968
Buku Teks
Lurier, Harold E.
Collier Books,, 1963.
Buku Teks
Simpson, J. Ernest
McGraw-Hill, 1975
Buku Teks
Hill, Myron G., 1936-
Emmanuel Law Outlines, Inc., 1989
Buku Teks