Ireson, Gren, author
Learning Matters, 2006
Buku Teks
Lambirth, Andrew
Learning Matters, 2005
Buku Teks
edited by Christine Knott
Learning Matters, 2010
Buku Teks
Copley, Selina, author
Learning Matters, 2011
Buku Teks
Hay, Julie, author
Open University Press, 2007
Buku Teks