Brachet, Michelle
Murray Books (Australia, 2012
Buku Referensi
Saricks, Joyce G.
[American Management Association, ], 2009
eBooks
Sharpe, Leslie T.
Camberidge University Press , 1994
Buku Teks SO
Rice, Thomas Jackson
Gale Research Company, 1983
Buku Referensi
Rosenberg, Betty
Libraries Unlimited, 1982
Buku Referensi