edited by Paul Boreham, Geoffrey Stokes and Richard Hall
Pearson-Longman, 2004
Buku Teks
Grant, Bruce, 1925-
Macdonald Futura Australia, 1983
Buku Teks
New York : Cambridge University Press
Majalah, Jurnal, Buletin
Malmstrom, Jean
Hayden Book Company, 1965
Buku Teks
Bram, Joseph
Random House, 1955
Buku Teks