edited by Peter Scott
Falmer Press , 2000
Buku Teks
edited by Jamil Salmi, Adriaan M. Verspoor
IAU Press , 1994
Buku Teks
Her Majesty's Stationery Office, 1987
Buku Teks
[place of publication not identified]: Higher education Bureau, Ministry of Education, Science and Culture 1984,
Buku Teks
edited by Maria Slowey, David Watson
Open University Press, 2003
Buku Teks