Spence, Catherine Helen
Penguin Books, 1984
Buku Teks
Kalinga Seneviratne, Yeo Lay Hwee
Asia Media Information and Communication centre (AMIC), 2011
Buku Teks
Owen, Robert
J.M. Dent & Sons , 1949
Buku Teks
Whipple, Leon
Da Capo Press, 1972
Buku Teks
Bantam Books, 1983
Buku Teks