Easton, Stewart C., author
Holt, Rinehart and Winston, 1966
Buku Teks
Carley, Michael
Earthscan Publications, 1998
Buku Teks
Maurier Daphne du
Dian Rakyat, 1991
Buku Teks
Queiroz, Rachel de
University Press, 1963
Buku Teks
Ansell, Rod
Currency Press,, 1986
Buku Teks