Evans, Norman, 1923-, author
Routledge, 2001
Buku Teks
Scott, Ronaldo Mota David, author
Elsevier, 2014
eBooks
Rothwell, William J., 1951-, author
American Management Association, 2008
eBooks
Winter, Richard
London: The Falmer Press, 1996
Buku Teks
Brookfield, Stephen D.
Jossey-Bass Pub., 1991
Buku Teks