1. Benson, Larry (ed.) (1987). The Riverside Chaucer. 3rd ed. New York: Houghton Mifflin. (Includes A Treatise on the Astrolabe, John Reidy (ed.), pp. 661–683, 1092–1104.)
2. Carter, Tom (1982). “Geoffrey Chaucer: Amateur Astronomer?” Sky & Telescope 63, no. 3: 246–247. (Astrolabe and perhaps Equatorie may indicate that Chaucer was an amateur astronomer who made his own astronomical observations.)
3. Eade, J. C. (1982). “‘We ben to lewed or to slowe’: Chaucer’s Astronomy and Audience Participation.” Studies in the Age of Chaucer 4: 53–85. (Discusses what we can learn from Chaucer’s work about his audience’s familiarity with astronomy and how it can clarify passages that seem obscure.)
4. Eisner, Sigmund (1975). “Building Chaucer’s Astrolabe.” Journal of the British Astronomical Association 86: 18–29, 125–132, 219–227. (How to translate Chaucer’s description of procedure into a modern understanding of the working of the astrolabe.)
5. — (1985). “Chaucer as a Technical Writer.” Chaucer Review 19 : 179–201. (Argues for Chaucer’s superiority as a technical writer over his contemporaries. Suggests that, if he did not write Equatorie himself, the author was influenced by Chaucer’s method.)