Stevenson, Greg, author
Batsford, 2003
Buku Teks
Grun, Bernard.
Published by Simon & Schuster, 1991
Buku Teks
Myint, Hla, author
Oxford University Press, 1971
Buku Teks
Fituni, L.A., author
Progress Publishers, 1963
Buku Teks
Dunning, Trisha, author
Blackwell, 2003
Buku Teks