U. Vones-Liebenstein, From Aquitaine to Provence: The struggle for influence during the schism of 1130, in J. Doran - D.J. Smith (edd.), Pope Innocent II (1130-43): The World vs the City, Londen - New York, 2016, p. 153. Gearchiveerd op 9 juli 2023.
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U. Vones-Liebenstein, From Aquitaine to Provence: The struggle for influence during the schism of 1130, in J. Doran - D.J. Smith (edd.), Pope Innocent II (1130-43): The World vs the City, Londen - New York, 2016, p. 153. Gearchiveerd op 9 juli 2023.