Scott, F.R. (Francis Reginald), author
Published in co-operation with Carleton University by University of Toronto Press, 1959
Buku Teks
Johnston, Grahame, author
Oxford University Press, 1970
Buku Teks
Buck, A.E., author
Public Administration Service, 1949
Buku Teks
edited by R.C. Bellan, W.H. Pope
McGraw-Hill, 1981
Buku Teks
Leonard, William G., author
McGraw-Hill, 1960
Buku Teks