by Sang-Oak Lee [and others]
[publisher not identified], [date of publication not identified]
Buku Teks
Lane, Edward William, author
Frederick Ungar Publishing, 1956
Buku Referensi
Nicholson, D.H.S., author
The Clarendon Press , 1949
Buku Teks
Puchta, Herbert
Cambridge University Press, 2010
Buku Teks
Puchta, Herbert
Cambridge University Press, 2012
Buku Teks