Swan, John
Emond Montgomery Publications Limited, 1985
Buku Teks
Murray, John Edward, author
Bobbs-Merrill, 1976
Buku Teks
edited by S.M. Waddams
University of Toronto Press, 1971
Buku Teks
Dawson, John Philip, author
Foundation Press, 1969
Buku Teks
Farnsworth, E. Allan
University casebook series, 1995
Buku Teks