Modern Belgium / edited by Rene Bryssinck, Marina Boudart and Michel Boudart
Modern Belgium Association , 1990
 Buku Teks
Meredith, Jack R.
Project management : a managerial approach
Wiley, 2015
 Buku Teks
Sturdivant, Frederick D.
Business and society : a managerial approach
Richard D. Irwin, 1977
 Buku Teks
Lerner, Eugene M.
Managerial finance : a system approach
Harcourt Brace Jovanovich , 1971
 Buku Teks
Hein, Leonard W.
The quantitative approach to managerial decisions
Prentice Hall of India, 1974
 Buku Teks