SCHAFF, Philip. History of the Christian Church. Volume IV: Mediaeval Christianity. A.D. 590-1073. Grand Rapids, Michigan : Christian Classics Ethereal Library. Dostupné online.ISBN 978-1-61025-043-6.
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Rothad of Soissons: Bishop of Soissons [online]. PeoplePill, [cit. 2020-07-13]. Dostupné online.