Norden, Mary
Conran Octopus Limited, 2000
Buku Referensi
Graham, Bruce Desmond
Australian National University Press, 1966
Buku Teks
Guild Sourcebooks, 2000
Buku Referensi
Guild Sourcebooks, 2000
Buku Referensi
Waller, Robert James
Warner Books, 1992
Buku Teks