MLA

Bursill-Hall, Geoffrey L., Sten Ebbesen, and Jan Pinborg. De Ortu Grammaticae : Studies In Medieval Grammar and Linguistic Theory In Memory of Jan Pinborg. Amsterdam: Benjamins, 1990.

APA

Bursill-Hall, G. L., Ebbesen, S., & Pinborg, J. (1990). De ortu grammaticae : studies in medieval grammar and linguistic theory in memory of Jan Pinborg. Amsterdam: Benjamins.

Chicago

Pinborg, Jan. De Ortu Grammaticae : Studies In Medieval Grammar and Linguistic Theory In Memory of Jan Pinborg. Edited by Geoffrey L. Bursill-Hall and Sten Ebbesen. Amsterdam: Benjamins, 1990.