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References
- ↑ Caiazzo, Irène; Burnett, Charles-S.-F. (2011). "New Manuscripts of On the astrolabe by Raymond of Marseilles". Scriptorium. 65 (2): 338–349. doi:10.3406/scrip.2011.4137.
- ↑ Tolan, John (2000). "Reading God's will in the stars. Petrus Alfoni and Raymond de Marseille defend the new Arabic astrology" (PDF). Revista Española de Filosofía Medieval. 7: 13–30.
- ↑ Darby, H. C. (1935). "A Note on an Early Treatise on the Astrolabe". The Geographical Journal. 85 (2): 179–181. doi:10.2307/1785993. ISSN 0016-7398.
