Zoetmulder, Petrus Josephus
Martinus Nijhoff, 1982
Buku Referensi
Fulk, R. D. (Robert Dennis)
Wiley-Blackwell, 2013
Buku Teks
edited by Malcolm Godden and Michael Lapidge
Cambridge University Press, 1991
Buku Teks
edited by Elaine Treharne
Wiley Blackwell, 2010
Buku Teks
Korea Foundation
Cookand/Besthome, 2003
Buku Teks