APA (7th ed.) Citation

Gerald von Wales & Hagen, J. J. (1979). The jewel of the church. Davis medieval texts and studies.

Chicago Style (17th ed.) Citation

Gerald von Wales and John J. Hagen. "The Jewel of the Church." Davis Medieval Texts and Studies 1979.

MLA (9th ed.) Citation

Gerald von Wales and John J. Hagen. "The Jewel of the Church." Davis Medieval Texts and Studies, 1979.

Warning: These citations may not always be 100% accurate.