Vocabularius Lucianus, etc
MLA
de Ratisbona, Henricus. Vocabularius Lucianus, Etc. 15AD. https://collections.library.yale.edu/catalog/10596553.
APA, 6th edition
de Ratisbona, H. (15 C.E.). Vocabularius Lucianus, etc [Early works to 1800, Manuscripts, Medieval Southern Germany 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10596553.