Hughes, Geoffrey, author
Blackwell , 2000
Buku Teks
Minkova, Donka, author
Cambridge University Press, 2009
eBooks
Cambridge University Press, 2009
eBooks
Roget, Peter Mark, 1779-1869, author
Longmans, Green and Co., 1953
Buku Referensi
Roget, Peter Mark, 1779-1869, author
The World Publishing Company, 1944
Buku Referensi