Maira, Arun
Nimby Books, 2008
Buku Teks
Rosser, J. Barkley, author
McGraw-Hill, 1996
Buku Teks
Carol S. Pearson, editor
Berrett-Koehler, 2012
Buku Teks
edited by Aldo Boitano de Moras, Raul Lagomarsino Dutra, H. Eric Schockman
Emerald, 2017
eBooks
The Conference Board; editor, Edward C. Bursk
The Free Press, 1973
Buku Teks