Kishimoto, Koichi, author
Japan Echo, 1977
Buku Teks
Denham, Paul
Stanley Thornes, 1987
Buku Teks
Kalijarvi, Thorsten V., author
Thomas Y. Crowell, 1954
Buku Teks
Comfort, Nicholas, author
Cassell Publishers, 1993
Buku Referensi
Lackie, J.M.
Elseiver Academic Press, 2007
Buku Referensi