The Encyclopedia of Ancient History
Unmatched in scholarship and diversity, The Encyclopedia of Ancient History is the definitive reference work for the study of the ancient world. This work is written and edited by an internationally diverse team of editors and contributors. Provides clear, concise, definitions and explanations of the key people, places, and events in ancient history. Spans the late Bronze Age through the seventh century CE. Covers the entire ancient Mediterranean world including the Near East and Egypt.
Evans, James. "Astronomy, Ptolemaic." The Encyclopedia of Ancient History. Ed. Roger S. Bagnall. Malden, MA: Wiley-Blackwell, 2012. Internet resource.