Caplo, Theodore, author
Harcourt, Brace & World, 1964
Buku Teks
Beneficial Management Institute, [Date of publication not identified]
Buku Teks
Thompson, Victor A., author
Alfred A. Knopf, 1969
Buku Teks
edited by W. W. Cooper, H. J. Leavitt [and] M. W. Shelly II
John Wiley & Sons, 1964
Buku Teks
Jun, Jong S., author
Scott, Foresman, 1973
Buku Teks