MLA

Passion of SS Ciriacus and Secundianus. 0AD. https://collections.library.yale.edu/catalog/10596556.

APA, 6th edition

Passion of SS Ciriacus and Secundianus. (0 C.E.). [Manuscripts, Medieval Italy 11th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10596556.