Drucker, Peter Ferdinand, 1909-2005
Truman Talley Books/Plume, 1992
Buku Teks
Stephens, Mitchell
Coloumbia University Press , 2014
Buku Teks
Johansen, Robert
McGraw-Hill , 1984
Buku Teks
edited by Alan Clapton
Institution of Engineering and Technology, 2008
eBooks
Hatten, Timothy S.
Prentice-Hall, 1997
Buku Referensi