Potter, Joan
Kensington Publishing, 2002
Buku Teks
Patton, Sharon F.
Oxford University Press, 1998
Buku Teks
Institute for the Studies of Language and Cultyres of Asia and Africa, 2002
Majalah, Jurnal, Buletin
Olson, Hope A.
Libraries Unlimited, 2001
Buku Teks
Olson, Hope A.
Libraries Unlimited, 2002
Buku Teks