Arithmetica
MLA
Boethius, d. 524. Arithmetica. [between 1000 and 1100]. https://collections.library.yale.edu/catalog/10517689.
APA, 6th edition
Boethius, d. 524. ([between 1000 and 1100])[Arithmetica]. https://collections.library.yale.edu/catalog/10517689.