Lee, Eng-baek, author
Kooke Yeon Goo So, Ko1988
Buku Teks
Rani Adriana, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2007
UI - Tesis Membership
So, Sang-gyu, author
Sinwon Puraim, 2006
Buku Referensi
Kim, Jong-rok, author
Park Lee Jeong, 2005
Buku Teks
Yeon, Jaehoon, author
Routledge, 2011
Buku Teks