Resume, Service
ARCO Publishing Company, Inc., 1967
Buku Teks
Dewey, Barbara I.
Oryx Press, 1987
Buku Teks
Devine, Fiona
Cambridge University Press, 2004
Buku Teks
Groves, Patricia
Harper Collines Publishers , 1992
Buku Teks
Fulmer, Robert M.
American Management Association, 2008
eBooks