by Lawrence L. Bethel ... [et al.]
McGraw-Hill, 1962
Buku Teks
Lundy, James L., author
Eurasia Publishing House, 1968
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harper & Brothers, 1954
Buku Teks
Terry, George Robert, author
Learning Systems, 1981
Buku Teks
Allen, Louis A., author
McGraw-Hill, 1958
Buku Teks