Murray, John Edward, author
Bobbs-Merrill, 1976
Buku Teks
edited by S.M. Waddams
University of Toronto Press, 1971
Buku Teks
Prosser, William L., author
Foundation Press, 1962
Buku Teks
Ratner, David L., author
West Publishing, 1996
Buku Teks
Dawson, John Philip, author
Foundation Press, 1969
Buku Teks