Dirks, Jerald F.
Serambi Ilmu Semesta, 2004
Buku Teks
Ewing, J.H., editor
Dell Publishing, 1964
Buku Teks
Hutchinson, 1959
Buku Referensi
Su, Heung-Ryeol
Ihwayeojadehagyo Chulphan bu, 2006
Buku Teks
Thiroux, Jacques P. author
MacMillan Publishing Company, 1985
Buku Teks