Michel-Kerjan, Erwann, author
Public Affairs, 2010
Buku Teks
Morrell, James
Penguin Books, 1972
Buku Teks
Ariely, Dan, author
Harper, 2008
Buku Teks
edited by Arch G. Woodside
Emerald, 2016
eBooks
Miller, David W., author
Prentice-Hall, 1967
Buku Teks