Jones, Peter H.
Butterworth, 1990
Buku Teks
Converse, Paul Dulaney, 1889-, author
Prentice-Hall, 1948
Buku Teks
McNair, Malcolm P.
New York, N.Y., McGraw-Hill
Buku Teks
Natelson, Morris, author
Fairchild Publications, 1962
Buku Teks
edited by Malcolm P. McNair and Mira Berman
American Management Association, 1967
Buku Teks