APA (7th ed.) Citation

Finley, M. I. (1991). The ancient Greeks. Penguin Books.

Chicago Style (17th ed.) Citation

Finley, M. I. The Ancient Greeks. London: Penguin Books, 1991.

MLA (9th ed.) Citation

Finley, M. I. The Ancient Greeks. Penguin Books, 1991.

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