E. YU, author
MPH Group Publishing Sdn Bhd, 2008
Buku Teks
Manninx, Daniel
Melbourne university press, 1984
Buku Teks
Gopal, Sarvepalli, author
Oxford University Press, 1992
Buku Teks
Crisp, L. F. (Leslie Finlay), author
Angus & Robertson , 1963
Buku Teks
Serle, Geoffrey, author
Melbourne University Press in association with Monash University, 1982
Buku Referensi