Dewis, M., author
MacDonald and Evans, 1978
Buku Teks
edited by Marc J. Schabracq, Jacques A.M. Winnubst, Cary L. Cooper
John Wiley & Sons, 2003
Buku Teks
Tausig, Mark, author
Springer, 2011
eBooks
Gould, Nick, author
Routledge, 2016
Buku Teks
Keefe, Robert H., author
Springer Publishing Company, 2013
Buku Teks