Curran, Daniel J., author
Allyn & Bacon, 1987
Buku Teks
Daugherty, Carrol R., author
Houghton Mifflin, 1952
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harper & Brothers, 1950
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harper & Brothers, 1950
Buku Teks
edited by, Richards Scase
Geroge Allen & Unwin, 1977
Buku Teks