Moekijat, author
Alumni, 1974
Buku Teks
Quena Rosanti, author
2016
UI - Skripsi (Membership)
Addesso, Patricia J., author
American Management Association, 2007
eBooks
Eyre, E.C.
Macmillan, 1989
Buku Teks
editor by Dabid A. Harris, Byron W. Engen and William E. Fitch
Van Nostrand Reinhold, 1991
Buku Teks