Sammy Agustinus Santana, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2019
UI - Tesis (Membership)
Brown, Robert G., author
McGraw-Hill, 1959
Buku Teks
Lewis, C.D., author
Butterworth, 1970
Buku Teks
Zulhasni, author
1985
UI - Skripsi (Membership)
Rangkuti, Freddy, author
RajaGrafindo Persada, 1996
Buku Teks