Levack Brian : The devil within : possession and exorcism in the christian west ( Yale University Prtess )

http://yalepress.yale.edu/yupbooks/book.asp?isbn=9780300114720
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Frog in your throat?

Terry Eagleton

http://www.lrb.co.uk/v35/n09/terry-eagleton/frog-in-your-throat 

article traduit dans n° 54 de Books :

http://www.books.fr/societes-et-politique/ils-vomissaient-du-sang-et-des-plumes/