Chong, To-sang
Sidae ui Chang, 2009
Buku Teks
Seah, David Chee-Meow
Departement of Japanese Studies National University of Singapore, 1995
Buku Teks
Jaspan, M.A.
The Australian National University, 1964
Buku Teks
Khomyunikheisyeon Pukse, 2009
Buku Teks
Kang, Yong-hwan
Kimundang, 2004
Buku Teks