Rani Adriana
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2007
UI - Tesis (Membership)
Kim, Jung-sup
Kyung Hee University Press, 2005
Buku Teks
Jeong, Kelly Y.
Lexington Books, 2011
Buku Teks
Institute of International Education Kyung Hee University
Kyung Hee University Press, 2009
Buku Referensi
Kim, Ji Hyon
Yoossi elaienssi, 2005
Buku Teks