Dirks, Jerald F., author
Almahira, 2006
Buku Teks
Dirks, Jerald F., author
Serambi Ilmu Semesta, 2004
Buku Teks
Ewing, J.H., editor
Dell Publishing, 1964
Buku Teks
Hutchinson, 1959
Buku Referensi
Su, Heung-Ryeol, author
Ihwayeojadehagyo Chulphan bu, 2006
Buku Teks