Crane, Burton
Simon and Schuster , 1959
Buku Teks
Williamson, Bobette Hayes
[American Management Association;, ], 2007
eBooks
Keirstead, Burton Seely
Basil Blackwell, 1959
Buku Teks
edited by William F. Butler, Robert A. Kavesh
Prentice-Hall, 1966
Buku Teks
Auger B.Y.
McGraw-Hill, 1987
Buku Teks