Drucker, Peter Ferdinand, 1909-2005
Harper & Brothers, 1950
Buku Teks
Moore, Wilbert E. (Wilbert Ellis)
Macmillan, 1955
Buku Teks
Lawrence L. Bethel ... [et al.]
McGraw-Hill, 1945
Buku Teks
by James L. Riggs ... [et al.]
McGraw-Hill, 1979
Buku Teks
by Lawrence L. Bethel ... [et al.]
McGraw-Hill, 1962
Buku Teks