Chapter Schipper, William (2004)
Rabanus Maurus and His Sources. In: Schooling and Society: The Ordering and Reordering of Knowledge in the Western Middle Ages (p. 1). (/isis/citation/CBB000770079/) unapi

Article Schipper, William (1997)
Annotated copies of Rabanus Maurus's De rerum naturis. Engl. Manuscr. Stud. (pp. 1-23). (/isis/citation/CBB000079409/) unapi

Book Binkley, Peter (1997)
Pre-modern encyclopaedic texts: Proceedings of the second COMERS Congress, Groningen, 1-4 July 1996. (/isis/citation/CBB000076589/) unapi

Article Schipper, William (1989)
Rabanus Maurus, De rerum naturis: A provisional check list of manuscripts. Manuscripta (pp. 109-118). (/isis/citation/CBB000048130/) unapi