Dromey, R. G.
Prentice Hall International, 1982
Buku Teks
Cerami, Charles A., author
Prentice-Hall, 1957
Buku Teks
Pierce, Conway, author
W H Freeman, 1965
Buku Teks
Hammond, W. Rogers (William Rogers), 1920-1990, author
Prentice-Hall, 1961
Buku Teks
Mina, Eli, author
American Management Association, 2009
eBooks