Contra falsas Francoru[m] litteras pro defensione honoris Serenissimi Romano[rum] Regis semper Augusti.
MLA
Maximilian I, Holy Roman Emperor, 1459-1519. Contra falsas Francoru[m] litteras pro defensione honoris Serenissimi Romano[rum] Regis semper Augusti.. not before May 1492]. https://collections.library.yale.edu/catalog/10602500.
APA, 6th edition
Maximilian I, Holy Roman Emperor, 1459-1519. (not before May 1492])[Contra falsas Francoru[m] litteras pro defensione honoris Serenissimi Romano[rum] Regis semper Augusti.]. https://collections.library.yale.edu/catalog/10602500.