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Buku Teks
Lohrey, Amanda, compiler
Australian Government Publishing Service, 1988
Buku Referensi
Canbera: Australian Government Publishing service, 1980,
Buku Referensi
Morrison, John, author
Rigby, 1973
Buku Teks
Stone, Carolyn R.
Wren Publishing, 1974
Buku Referensi