APA (7th ed.) Citation

Ptolemaeus, C. 1. (1912). Des Claudius Ptolemaeus Handbuch der Astronomie. Teubner.

Chicago Style (17th ed.) Citation

Ptolemaeus, Claudius 100-178. Des Claudius Ptolemaeus Handbuch Der Astronomie. Leipzig: Teubner, 1912.

MLA (9th ed.) Citation

Ptolemaeus, Claudius 100-178. Des Claudius Ptolemaeus Handbuch Der Astronomie. Teubner, 1912.

Warning: These citations may not always be 100% accurate.