Sakamoto, Taro
The International Society for Educational Information, 1984.
Buku Teks
Sakamoto, Taro, author
The International Society for Educational Information Press, Inc., 1975
Buku Teks
Pan, Lynn
Kodansha International, 1994
Buku Teks
Aston, W.G., author
Charles E. Tutle, 1981
Buku Teks
Halliday, Jon, author
Pantheon Books, 1975
Buku Teks