Barnum, Barbara Stevens, author
An Aspen, 1995
Buku Teks
Drucker, Peter Ferdinand, 1909-2005, author
Harper & Row, 1996
Buku Teks
Henshaw, Richard C., author
Richard D. Irwin, 1966
Buku Teks
by the editors of Fortune
Doubleday, 1956
Buku Teks
Learned, Edmund P. (Edmund Philip), 1900-1991, author
Harvard University Press, 1951
Buku Teks