Chai Har Lee, Uchenna Cyril Eze
LAP Lamber Academic Publishing , 2012
Buku Teks
Raisa Khairunisa, author
2014
UI - Skripsi (Membership)
Anastasia Mahendra, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2017
UI - Skripsi (Membership)
William Yeremia, author
Universitas Indonesia, 2015
UI - Tesis (Membership)
Ginting, Astrid Emia, author
2016
UI - Skripsi (Membership)