Cotton, F. Albert, author
UI-Press, 1989
Buku Teks
Partington, J. R.
The English Language Book Society, 1965
Buku Teks
Cotton, F. Albert, author
UI-Press, 2014
Buku Teks
Cotton, F. Albert, author
UI-Press, 1989
Buku Teks
Dodd, R.E.
Elsevier, 1957
Buku Teks