Lidman, Tomas, 1948 - , author
Chandos Pub., 2012
Buku Teks
McCue, Janice Helen, author
The Scarecrow Press , 1988
Buku Teks
Anna Galluzzi
Chandos , 2014
eBooks
Street, H.
Cambridge University Press, 1953
Buku Teks
Mallinson, Vernon
London Heinemann 1960
Buku Teks