…e.22125 . ISBN 978-1-56159-263-0 . Retrieved 25 September 2021 . (subscription, Wikilibrary access, or UK public library membership required) ^ "Τοξόλυρος – Εἰς τὰ ἁρμονικὰ Πτολεμαίου ὑπόμνημα – φιλοσοφικό Ακαδημίας" [In Ptolemy's Harmonized Memoirs – Philosophical Academy] (in G…