edited by Korean National Commission for UNESCO
Hollym, 2003-2004
Buku Referensi
edited by John K. Ryan
The Catholic University of America Press, 1963
Buku Teks
Kim, Yung-gyo, author
Gimmyoungsa, 2006
Buku Teks
Beob-Ryun
Jisik Channel, 2012
Buku Teks
edited by John Herman Randali, Justus Buchler
Barnes & Noble, 1950
Buku Teks