Kalinga Seneviratne, Yeo Lay Hwee
Asia Media Information and Communication centre (AMIC), 2011
Buku Teks
Abraham, Henry J., author
Oxford University Press, 1982
Buku Teks
Abraham, Henry J., author
Oxford University Press, 1977
Buku Teks
Foster, Steve, author
Oxford university press, 2012
Buku Teks
Stone, Richard
Blackstone Press limited, 1997
Buku Teks