Buck, A. E., author
Public Administration Service, 1949
Buku Teks
Clokie, H. Mcd.
Toronto Langmans, Green 1950
Buku Teks
edited by Harold M. Groves
Henry Holt and Company, 1955
Buku Teks
Crawford, Kenneth Grant
University of Toronto Press, 1958
Buku Teks
Patrick Malcolmson, Richard Myers, Gerald Baier, and Thomas M.J. Bateman.
Canada University of Toronto Press , 2016
Buku Teks