Chaudhry, Asif
New Jersey : Wiley, 2016
Buku Teks
Brown, Lawrence D.
Business Publications, 1987
Buku Teks
Bellandi, Francesco
Emerald, 2018
eBooks
Young, David W.
Crimson Press Curriculum Center, 1994
Buku Teks
Modern Business Report , 1985
Buku Teks