APA (7th ed.) Citation

Westermann, W. L. (1955). The slave systems of Greek and Roman antiquity / by W.L. Westermann. American Philosophical Society.

Chicago Style (17th ed.) Citation

Westermann, W. L. The Slave Systems of Greek and Roman Antiquity / by W.L. Westermann. American Philosophical Society, 1955.

MLA (9th ed.) Citation

Westermann, W. L. The Slave Systems of Greek and Roman Antiquity / by W.L. Westermann. American Philosophical Society, 1955.

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