Powell, Craig, author
South Head Press, 1968
Buku Teks
Project Managers Novy Eddison & Partners , t.t.
Buku Teks
Coffman, Steve, author
[American Library association, American Library association], 2003
eBooks
Brundage, Anthony, 1938-, author
John Wiley & Sons, Inc., 2018
Buku Teks
Conrad, Diane Helen, author
[Sense, Sense], 2012
eBooks