Ferreiro, A. (2009). St. Braulio of Zaragoza's "Letter 21" to Pope Honorius I regarding lapsed baptized Jews. Sacris erudiri, 48, 75-95. doi:10.1484/J.SE.1.100555
Chicago Style (17th ed.) CitationFerreiro, Alberto. "St. Braulio of Zaragoza's "Letter 21" to Pope Honorius I Regarding Lapsed Baptized Jews." Sacris Erudiri 48 (2009): 75-95, https://doi.org/10.1484/J.SE.1.100555.
MLA (8th ed.) CitationFerreiro, Alberto. "St. Braulio of Zaragoza's "Letter 21" to Pope Honorius I Regarding Lapsed Baptized Jews." Sacris Erudiri, vol. 48, 2009, pp. 75-95, https://doi.org/10.1484/J.SE.1.100555.
Warning: These citations may not always be 100% accurate.