Pillow, Bradford H., author
Springer, 2012
eBooks
Olga Stephiana, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2017
UI - Skripsi (Membership)
Kail, Robert V., author
Prentice Hall International, 2001
Buku Teks
Routledge, 2003
Buku Teks
Zia Thahira, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2022
UI - Tesis (Membership)