Dale, Ernest, author
New York, N.Y., American Management Association
Buku Teks
Dale, Ernest, author
American Management Association, 1955
Buku Teks
written by M. C. Barnes [and others]
Allen & Unwin, 1970
Buku Teks
Brown, Wilfred, author
Heinemann, 1971
Buku Teks
by James L. Riggs ... [et al.]
McGraw-Hill, 1979
Buku Teks