Sinha, V. C.
New Delhi Allied , 1984
Buku Teks
Mellor, John W.
Cornell University Press, 1976
Buku Teks
Raghavan, Srinath, author
Basic Books, a member of the Perseus Books Group, 2016
Buku Teks
Roy, Kaushik, author
Oxford University Press, 2016
eBooks
The National Institute of The Korean Language, 2011
Buku Teks