APA (7th ed.) Citation

Richter, G. M. A. (1971). The engraved gems of the Greeks, Etruscans and Romans. by Gisela M. A. Richter. Phaidon.

Chicago Style (17th ed.) Citation

Richter, Gisela Marie Augusta. The Engraved Gems of the Greeks, Etruscans and Romans. by Gisela M. A. Richter. London: Phaidon, 1971.

MLA (9th ed.) Citation

Richter, Gisela Marie Augusta. The Engraved Gems of the Greeks, Etruscans and Romans. by Gisela M. A. Richter. Phaidon, 1971.

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