Boehm, E.A.
Longman Chesire, 1979
Buku Teks
Boehm, E.A.
Longman, 1971
Buku Teks
Hill, Hal, 1948-
ASEAN-Australia Joint Research Project, 1984
Buku Teks
Arndt, Heinz Wolfgang, 1915-2002
Australian NAtional University Press, 1972
Buku Teks
Sale, Colin
Australian Government Publishing Service, 1975
Buku Teks