Kim, Yong-ja, author
Min Eum Sa, 1992
Buku Teks
Glover, T. R.
Penguin Books, 1944
Buku Teks
Blainey, Geoffrey, 1930-, author
Sun Books, 1978.
Buku Teks
Hogarth, D. G.
Oxford University Press, 1950
Buku Teks
prepared by the Special Publications Division, National Geographic Society, Washington, D.C.
The National Geogarphic Society, 1986
Buku Referensi