De centum metris, etc.
MLA
Servius, active 4th century. De centum metris, etc.. [between 1450 and 1500]. https://collections.library.yale.edu/catalog/2044064.
APA, 6th edition
Servius, active 4th century. ([between 1450 and 1500])[De centum metris, etc.]. https://collections.library.yale.edu/catalog/2044064.