Information Canada, 1972
Buku Teks
Krantz, John C.
Williams & Wilkins, 1974
Buku Teks
Leslie Cromwell [and others]
Prentice-Hall, 1976
Buku Teks
Hicks, Lanis L.
Jones & Bartlett Learning, 2014
Buku Teks
Lindberg, Donald A.B.
Charles C. Thomas, 1968
Buku Teks