Capitularies of Charlemagne, Louis the Pious, etc
MLA
Capitularies of Charlemagne, Louis the Pious, Etc. 0AD. https://collections.library.yale.edu/catalog/2015180.
APA, 6th edition
Capitularies of Charlemagne, Louis the Pious, etc. (0 C.E.). [Manuscripts, Medieval France 9th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/2015180.