Artikel Jurnal
Davidson, Jamie S., author
Cambridge University Press, 2018
Buku Teks
Hanguk Kukche Kyoryu Chaedan
Seoul Selection, 2011
Buku Teks
Karpinski, Andrzej, author
Polonia Publishing House, 1964
Buku Teks
Sroufe, L. Alan, author
Cambridge University Press, 1996
Buku Teks