Charms, charmers and charming : international research on verbal magic. 1st publ. Hampshire : Palgrave Macmillan, 2009. xxvii, 294 s. Palgrave historical studies in witchcraft and magic. Dostupné na internetu: <http://www.loc.gov/catdir/enhancements/fy0829/2008016159-d.html> <http://www.loc.gov/catdir/enhancements/fy0829/2008016159-t.html> ISBN 978-0-230-55184-8.