APA (7th ed.) Citation
Zeller, E. (1955). Outlines of the history of Greek philosophy (13th.ed.). Meridian books.
Chicago Style (17th ed.) Citation
Zeller, Eduard. Outlines of the History of Greek Philosophy. 13th.ed. New York: Meridian books, 1955.
MLA (9th ed.) Citation
Zeller, Eduard. Outlines of the History of Greek Philosophy. 13th.ed. Meridian books, 1955.
Warning: These citations may not always be 100% accurate.