Grant, Patrick
Macmillan Press, 1979
Buku Teks
Edited by Sophie Chiari
Routledge, 2015
Buku Teks
Irma Taavitsainen, Paivi Pahta, editor
Cambridge University Press, 2011
Buku Teks
Wilcox, Helen, author
John Wiley & Sons Inc,, 2014
Buku Teks
Hutson, Lorna, author
Routledge, 1997
Buku Teks