Summa de poenitentia et matrimonio, etc
MLA
Raymond, of Peñafort, Saint, 1175?-1275. Summa de poenitentia et matrimonio, etc. [ca. 1250]. https://collections.library.yale.edu/catalog/10269833.
APA, 6th edition
Raymond, of Peñafort, Saint, 1175?-1275. ([ca. 1250])[Summa de poenitentia et matrimonio, etc]. https://collections.library.yale.edu/catalog/10269833.