Harding, Michael
Elex Media Komputindo, 1993
Buku Teks
Ginting, Lora Florencia Br
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2016
UI - Tesis (Membership)
Siahaan, Juventhy M.
Universitas Indonesia, 2007
UI - Skripsi (Membership)
Sugih Haryati
Universitas Indonesia, 2008
UI - Tesis (Open)
Sugih Haryati
Universitas Indonesia, 2008
UI - Tesis (Open)