APA (7e ed.) Bronvermelding

WESTERMANN, W. L. (1955). The Slave systems of Greek and Roman antiquity. The American philosophical society.

Chicago (17e ed.) Bronvermelding

WESTERMANN, William L. The Slave Systems of Greek and Roman Antiquity. Philadelphia: The American philosophical society, 1955.

MLA (9e ed.) Bronvermelding

WESTERMANN, William L. The Slave Systems of Greek and Roman Antiquity. The American philosophical society, 1955.