Whitman, Howard
Prentice-Hall, 1961
Buku Teks
William J. Rothwell, Harvey L. Sterns, Diane Spokus, Joel M. Reaser
American Management Association, 2008
eBooks
Simons, Ronald L.
Macmillan, 1985
Buku Teks
McGraw-Hill, 2014
Buku Teks
Weiss, Joseph Douglas
Hopkinson and Blake, 1969
Buku Teks SO