Crowe, Mary
MacIntyre Purcell Pub, 2010
Buku Teks SO
Basheer , 2007
Buku Referensi
Jain, Poonam
Sterling Publishers Pvt. Ltd, 2003
Buku Teks
written by Koean Cultural and Historical Survey Society ; translated by Jung Ha Yun
Korean, Dolbegae Publishers, 2007
Buku Referensi
Koehler, Robert
Seoul Selection, 2009
Buku Teks SO