Khairunnas
Program Pascasarjana Universitas Indonesia, 2011
UI - Tesis (Open)
Easter Deashinta Harryputri
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2015
UI - Skripsi (Membership)
edited by Debbie Millman
Rockport Publishers, 2012
Buku Referensi
Farriza Septiarani
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2017
UI - Skripsi (Membership)
Post, Karen
[American Management Association, ], 2004
eBooks