Sage, 2001
Buku Teks
Bor, Robert
Sage, 2002
Buku Teks
edited by Ray Woolfe, Windy Dryden, Sheelagh Strawbridge
Sage Publications, 2003
Buku Referensi
Maggie Robson; Sue Pattison, editor
Sage, 2018
Buku Teks
Claringbull, Norman, author
Learning Matters, 2011
Buku Teks