Miller, David W.
Prentice-Hall, 1960
Buku Teks
edited by Joseph F. McCloskey, Florence N. Trefethen
John Hopkins Press, 1954
Buku Teks
American Management Association
American Management Assosiation, 1958
Buku Teks
Wagner, Harvey M.
Prentice-Hall, 1969
Buku Teks
Fabrycky, Wolter J., 1932-
Prentice-Hall, 1966
Buku Teks