London, Keith R.
Petrocelli Books, 1974
Buku Teks SO
Johnson, Thomas E.
American Management Association, 2010
eBooks
Hackos, JoAnn T.
John Wiley & Sons, 1994
Buku Referensi
Johnson, Thomas E.
[American Management Association;, ], 2002
eBooks
Penna, C.V.
Unesco , 1970
Buku Teks SO