edited b: Wallace R. Blischke, D.N. Prabhakar Murthy
John Wiley & Sons, 2003
Buku Teks
National Bureau of Economic Reserach, 1947
Buku Teks
edited by Roodney A. Ellis
Routledge, Taylor & Francis Group, 2009
Buku Teks
edited by Ron Zemke and John A. Woods
American Management Association, 1998
eBooks
edited by Lori L. Driscoll, W. Bede Mitchell
Routledge, 2009
Buku Teks