APA (7th ed.) Citation

Berkhout, C. T., & Russell, J. B. (1981). Medieval heresies: A bibliography, 1960-1979. Pontifical Institute of Mediaeval Studies.

Chicago Style (17th ed.) Citation

Berkhout, Carl T., and Jeffrey Burton Russell. Medieval Heresies: A Bibliography, 1960-1979. Toronto: Pontifical Institute of Mediaeval Studies, 1981.

MLA (9th ed.) Citation

Berkhout, Carl T., and Jeffrey Burton Russell. Medieval Heresies: A Bibliography, 1960-1979. Pontifical Institute of Mediaeval Studies, 1981.