Catalogue of engraved gems of the classical style,
by Gisela M. A. Richter.
APA Citation
Metropolitan Museum of Art (New York, N., Richter, G. M. A. (Gisela Marie Augusta). (1920). Catalogue of engraved gems of the classical style. New York: Metropolitan Museum of Art.
MLA Citation
Metropolitan Museum of Art (New York, N.Y.), and Gisela M. A. (Gisela Marie Augusta) Richter. Catalogue of Engraved Gems of the Classical Style. New York: Metropolitan Museum of Art, 1920.
Warning: These citations may not always be complete (especially for serials).