Ha, Tae Hung, author
Yonsei University Press, 1958
Buku Teks
Kim, In-ok, author
Intiative, 2011
Buku Teks
Rae Sita Michel, author
2017
UI - Skripsi (Membership)
Yoo, Yeol-su
Yekyong Publishing Co., 2002
Buku Referensi
Siti Lainufar Nur Hanifah, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2018
UI - Skripsi Membership