APA (7th ed.) Citation

Guthrie, W. K. C. (1969). A History of Greek philosophy. University Press.

Chicago Style (17th ed.) Citation

Guthrie, W. K. C. A History of Greek Philosophy. Cambridge: University Press, 1969.

MLA (9th ed.) Citation

Guthrie, W. K. C. A History of Greek Philosophy. University Press, 1969.