Bowser, eileen, author
Macmillan Library reference USA, 1990
Buku Referensi
Hayward, Susan, author
Routledge, 2006
Buku Teks
Levy, Emanuel
New York University Press, 1999
Buku Teks
Anthony R. Guneratne, editor; Wimal Dissanayake, editor
Routledge, 2003
Buku Teks
Hayward, Susan, author
Routledge , 2006
Buku Referensi