Son, So-hui
Si-sa Yong-OSa, 1988
Buku Teks
Ball, J. Dyer
Kelly & Walsh, Limited, 1925
Buku Teks
Rani Adriana, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2007
UI - Tesis (Membership)
Pak, Un-bong, 1960-, author
Chaek kwa Hamkke, 2007
Buku Teks
Crowder, Richard
Twayne Publisher, 1964
Buku Teks