https://www.minstergatebooks.co.uk/book/37005/blumenthal-uta-renate-translation/the-investiture-controversy-church-and-monarchy-from-the-ninth-to/
THE INVESTITURE CONTROVERSY: Church and Monarchy from the Ninth to… | The Minster Gate Bookshop
the investiture controversychurchmonarchyninthminster
https://www.medievalists.net/2013/02/what-was-the-investiture-controversy-a-controversy-about/
What was the Investiture Controversy a Controversy About? - Medievalists.net
Feb 15, 2017 - This thesis will aim to demonstrate that the Investiture Controversy was primarily a clash originating from fifth century ideas which were put into practice...
the investiture controversymedievalists