TY - JOUR T1 - The simony crisis of the eleventh century and the ‘Letter of Guido’ JO - Journal of Ecclesiastical History UR - https://eprints.whiterose.ac.uk/169771/ PY - 2021/09/08 AU - West C ED - DO - DOI: 10.1017/S0022046921000063 PB - Cambridge University Press (CUP) VL - 73 IS - 2 SP - 229 EP - 253 Y2 - 2024/12/22 ER -