Canon 4 in 2. Recte & retro, retro & recte
MLA
Canon 4 in 2. Recte & Retro, Retro & Recte. 0AD. https://collections.library.yale.edu/catalog/2057967.
APA, 6th edition
Canon 4 in 2. Recte & retro, retro & recte. (0 C.E.). [Manuscripts, Musical works]. https://collections.library.yale.edu/catalog/2057967.