Apple, James MacGregor, 1915-1978
John Wiley & Sons, 1977
Buku Teks SO
designed and produced by serasia limited for asian productivity organization
Asian Productivity Organization , 1971
Buku Teks SO
Mallick, Randoph W.
New York, N.Y., John Wiley & Sons
Buku Teks SO
Ireson, William Grant, 1914-
Prentice-Hall, 1959
Buku Teks SO
Muther, Richard
McGraw-Hill Book Company, Inc., 1955
Buku Teks SO