Sakamoto, Taro
The International Society for Educational Information Press, Inc., 1975
Buku Teks
Pan, Lynn
Kodansha International, 1994
Buku Teks
Aston, W.G.
Charles E. Tutle, 1981
Buku Teks
Halliday, Jon
Pantheon Books, 1975
Buku Teks
Frellesvig, Bjark
Cambridge University Press, 2010
Buku Teks