edited by Sarah Gehlert; Teri Arthur Browne
John Wiley & Sons, 2012
Buku Teks
Keefe, Robert H., author
Springer Publishing Company, 2013
Buku Teks
Smith, Michael J., author
Oxford University Press, 2010
Buku Teks
edited by Marc J. Schabracq, Jacques A.M. Winnubst, Cary L. Cooper
John Wiley & Sons, 2003
Buku Teks
Golightley, Malcom, author
Learning matters Ltd., 2008
Buku Teks