Buxton, L.H. Dudley, author
The Clarendon Press, 1935
Buku Teks
Brockliss, L. W. B., author
Oxford University Press, 2016
eBooks
editor, John Prest
Oxford University Press, 1993
Buku Referensi
Scholes, Percy A., author
Oxford University Press, 1933
Buku Referensi
Kyoto University of Education I Fujinomori-cho, 2006
Majalah, Jurnal, Buletin