Hawkins, David E.
Palgrave Macmillan, 2006
Buku Teks
Ralph Tench, William Sun, Brian Jones, editors
Emerald, 2014
Buku Teks
Simanjuntak, Evangelina
2017
UI - Skripsi (Membership)
Taufan Bahtera
2018
UI - Skripsi (Membership)
Dyah Paramita Noormandari
Universitas Indonesia, 2006
UI - Tesis (Membership)