Expositio in Regulam S. Benedicti (fragment).
MLA
Smaragdus, Abbot of St. Mihiel, active 809-819. Expositio in Regulam S. Benedicti (fragment).. [between 890 and 900].. https://collections.library.yale.edu/catalog/2003587.
APA, 6th edition
Smaragdus, Abbot of St. Mihiel, active 809-819. ([between 890 and 900].)[Expositio in Regulam S. Benedicti (fragment).]. https://collections.library.yale.edu/catalog/2003587.