Staunton, Patricia J., author
W.B. Saunders, 1989
Buku Teks
Staunton, Patricia J., author
Churchill Livingsotne, 2003
Buku Teks
Blackwell, 2007
Buku Teks
edited by John Tingle and Alan Cribb
Blackwell, 2007
Buku Teks
Griffith, Richard, author
Learning matters Ltd., 2008
Buku Teks