Oscar Beck, 1995
Buku Teks
Epstein, Catherine, author
Wiley Blackwell, 2015
Buku Teks
Wang, Lv, author
China Renmin University Press, 2015
eBooks
Sri Rizki Kesuma Ningrum, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2014
UI - Skripsi (Membership)
Wandelt, Ingo, author
Friedrich Ebert Stiftung Indonesia Office, 2009
Buku Referensi