@article{article, title  = {{The simony crisis of the eleventh century and the ‘Letter of Guido’}},

 publisher = {{Cambridge University Press (CUP)}},

 url = {{https://eprints.whiterose.ac.uk/169771/ }},

 year = {{2021}},

 month = {{9}},

 author = {{West C}},

 doi = {{10.1017/S0022046921000063}},

 volume = {{73}},

 journal = {{Journal of Ecclesiastical History}},

 issue = {{2}},

 pages = {{229-253}},

 note = {{Accessed on 2024/09/20}}}