MLA

Arma Christi Prayer Roll. 0AD. https://collections.library.yale.edu/catalog/15502542.

APA, 6th edition

Arma Christi prayer roll. (0 C.E.). [Art, Prayers and devotions, Early works to 1800, Drawings (visual works) Netherlands 15th century, Manuscripts, Medieval Netherlands 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/15502542.