Poznámka 3
Srv. např. D. L. Wagner, The Seven Liberal Arts and Classical Scholarship, in: The Seven Liberal Arts in the Middle Ages, vyd. D. L. Wagner, Bloomington 1983, str. 21–22; M. L. Colish, The Mirror of Language: A Study in the Medieval Theory of Knowledge, New Haven – London 1968, str. 93–101; G. L. Bursill-Hall, Speculative Grammars of the Middle Ages. The Doctrine of partes orationis of the Modiastae, Hague – Paris 1971, str. 22–23, atd.