APA (7th ed.) Citation

British Museum. Department of Greek and Roman Antiquities, Walters, H. B., & Smith, A. H. Catalogue of the engraved gems and cameos: Greek Etruscan and Roman in the British Museum (Rev. and enl. ed.).

Chicago Style (17th ed.) Citation

British Museum. Department of Greek and Roman Antiquities, H. B. Walters, and A. H. Smith. Catalogue of the Engraved Gems and Cameos: Greek Etruscan and Roman in the British Museum. Rev. and enl. ed.

MLA (9th ed.) Citation

British Museum. Department of Greek and Roman Antiquities, et al. Catalogue of the Engraved Gems and Cameos: Greek Etruscan and Roman in the British Museum. Rev. and enl. ed.