Department of English, University of Queensland,
Majalah, Jurnal, Buletin
Australia : University of Melbourne
Majalah, Jurnal, Buletin
Canbera: Australian Government Publishing service, 1980,
Buku Referensi
Phillips, A.A.
FW Chesire, 1958.
Buku Teks SO
1982, George Allen & Unwin
Buku Teks SO