1993
Buku Teks
Craig, Robin Kundis, author
West, 2010
Buku Teks
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1990
UI - Skripsi (Membership)
Jeremy Jordan, author
2018
UI - Skripsi (Membership)
Angela Vania Rustandi, author
2017
UI - Skripsi (Membership)