Boudet, J.-P. (2014). "Astrology between rational science and divine inspiration: The pseudo-Ptolemy's centiloquium". In Rapisarda, S.; Niblaeus, E. (eds.). Dialogues among Books in Medieval Western Magic and Divination. Micrologus' library. Vol. 65. Sismel edizioni del Galluzzo. pp. 47–73. ISBN9788884505811. Retrieved 19 August 2021.
Neugebauer (1975, p. 834) Neugebauer, Otto (1975). A History of Ancient Mathematical Astronomy. Vol. I–III. Berlin, DE / New York, NY: Springer Verlag.
Hetherington, Norriss S. (8 April 2014). Encyclopedia of Cosmology. Routledge Revivals. Vol. Historical, Philosophical, and Scientific Foundations of Modern Cosmology. Routledge. p. 527. ISBN978-1-317-67766-6.
Pecker, Jean Claude; Dumont, Simone (2001). "From pre-Galilean astronomy to the Hubble Space Telescope and beyond". In Kaufman, Susan (ed.). Understanding the Heavens: Thirty centuries of astronomical ideas from ancient thinking to modern cosmology. Springer. pp. 309–372. doi:10.1007/978-3-662-04441-4_7. ISBN3-540-63198-4.
Mittenhuber, F. (2010). "The tradition of texts and maps in Ptolemy's Geography". Ptolemy in Perspective: Use and criticism of his work from antiquity to the nineteenth century. Archimedes. Vol. 23. Dordrecht, NL: Springer Netherlands. pp. 95–119. doi:10.1007/978-90-481-2788-7_4. ISBN978-90-481-2788-7.
Duke, Dennis. "Ptolemy's cosmology". scs.fsu.edu/~dduke (academic pers. website). Florida State University. Archived from the original on 7 November 2009. — Cited page seems to present for viewing some alternate version of the now defunct Shockwave Flash video file format. The video file player software for the file has been "retired" and delibarately disabled / shut down / blocked / by Adobe. The file is still present, embedded in the archived web page's source, and with only a little extra effort can be extracted from the copy saved in the Internet Archive, linked to in the citation.
Smith, Mark (2015). From Sight to Light: The passage from ancient to modern optics. The University of Chicago Press. pp. 116–118. Bibcode:2014fslp.book.....S.
Schiefsky, M. (2012). "The creation of second-order knowledge in ancient Greek science as a process in the globalization of knowledge". The Globalization of Knowledge in History. MPRL – Studies. Berlin, DE: Max-Planck-Gesellschaft zur Förderung der Wissenschaften. ISBN978-3-945561-23-2.
Jones, A. (2020). "The ancient Ptolemy"(PDF). In Juste, D.; van Dalen, B.; Hasse, D.N.; Burnett, C.; Turnhout; Brepols (eds.). Ptolemy's Science of the Stars in the Middle Ages. Ptolemaeus Arabus et Latinus Studies. Vol. 1. pp. 13–34 – via New York University / archive.nyu.edu.
Duke, Dennis. "Ptolemy's cosmology". scs.fsu.edu/~dduke (academic pers. website). Florida State University. Archived from the original on 7 November 2009. — Cited page seems to present for viewing some alternate version of the now defunct Shockwave Flash video file format. The video file player software for the file has been "retired" and delibarately disabled / shut down / blocked / by Adobe. The file is still present, embedded in the archived web page's source, and with only a little extra effort can be extracted from the copy saved in the Internet Archive, linked to in the citation.