Owens, Richard N.
Homewood, Ill. Richard D. Irwin, Inc , 1958
Buku Teks
Drucker, Peter Ferdinand, 1909-2005
Pan Books, 1982
Buku Teks
Drucker, Peter Ferdinand, 1909-2005
Harper & Row, 1945
Buku Teks
Frohman, Alan L.
McGraw-Hill, 1992
Buku Teks
Holden, Paul E.
McGraw-Hill, 1951
Buku Teks