edited by Robert D. Dean, William H. Leahy, and David L. McKee
Free Press, 1970
Buku Teks
Bish, Robert L.
Prentice-Hall, 1974
Buku Teks
Hirsch, Werner Z.
McGraw-Hill, 1973
Buku Teks
Ronan Paddison, Tom Hutton, editors
Sage, 2015
Buku Teks
Puu, Tonu
Springer-Verlag, 1997
Buku Teks