editors by Gisela M. von Dran; Jennifer Cargill
The Haworth Press, Inc., 1993
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Pan Books, 1982
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harper & Row, 1945
Buku Teks
Sachs, Jeffrey D., author
Random House, 2012
Buku Teks
Sturdivant, Frederick D., author
Richard D. Irwin, 1977
Buku Teks