Barnett, G. William, author
American Management Association, 2008
eBooks
Nina Rachmawati, author
Fakultas Teknik Universitas Indonesia, 2009
UI - Tesis (Open)
Januar R. Sumardi, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1994
UI - Tesis (Membership)
Creedy, Judith
McGraw-Hill , 1979
Buku Teks
Fraser, W.D.
Macmillan Publishers Ltd., 1984
Buku Teks