Göteborgs högskolas årsskrift 36, 1930:1. Göteborg: Elanders boktr. aktiebolag. Reprint, New York: Garland Publishing, 1980. Ptolemy. 2000. Harmonics, translated and commentary by Jon Solomon. Mnemosyne, Bibliotheca Classica Batava, Supplementum, 0169–8958, 203. Leiden and Boston: Brill Publishers. . Smith, A.M. (1996) Ptolemy's theory of visual perception: An English translation of the Optics with introduction and commentary. Transactions of the American Philosophical Society, Vol. 86, Part 2. Philadelphia: The American Philosophical Society. . Stevenson, Edward Luther (trans. and ed.). 1932. Claudius Ptolemy: The Geography. New York: New York Public Library. Reprint, New York: Dover, 1991. (This is the only complete English translation of Ptolemy's most famous work. Unfortunately, it is marred by numerous mistakes and the placenames are given in Latinised forms, rather than in the original Greek). Stückelberger, Alfred, and Gerd Graßhoff (eds). 2006. Ptolemaios, Handbuch der Geographie, Griechisch-Deutsch. 2 vols. Basel: Schwabe Verlag. . (Massive 1018 pp. scholarly edition by a team of a dozen scholars that takes account of all known manuscripts, with facing Greek and German text, footnotes on manuscript variations, color maps, and a CD with the geographical data) Ptolemy's Almagest, Translated and annotated by G. J. Toomer. Princeton University Press, 1998 Sir Thomas Heath, A History of Greek Mathematics, Oxford : Clarendon Press, 1921. External links Ptolemy's Tetrabiblos at LacusCurtius (Transcription of the Loeb Classical Library's English translation) Entire Tetrabiblos of J.M. Ashmand's 1822 translation. Ptolemy's Geography at LacusCurtius (English translation, incomplete) Extracts of Ptolemy on the country of the Seres (China) (English translation) Almagest books 1–13 The complete text of Heiberg's edition (PDF) Greek. Almagest books 1–6 with preface at archive.org Geography, digitised codex made in Italy between 1460 and 1477, translated to Latin by Jacobus Angelus at Somni. Also known as codex valentinus, it is the oldest manuscript of the codices with maps of Ptolemy with the donis projections. Hieronymi Cardani ... In Cl. Ptolemaei ... IIII De astrorum judiciis From the Rare Book and Special Collection Division at the Library of Congress Almagestū Cl. Ptolemei From the Rare Book and Special Collection Division at the Library of Congress Franz Boll (1894), "Studien über Claudius Ptolemaeus. Ein Beitrag zur Geschichte der griechischen Philosophie und Astrologie" In: Neue Jahrbücher für Philologie und Pädagogik, Supplementband 21,2. Teubner, Leipzig, pp. 49–244. Java simulation of the Ptolemaic System – at Paul Stoddard's Animated Virtual Planetarium, Northern Illinois University Epicycle and Deferent Demo – at Rosemary Kennett's website at