Cite

Map of the East Riding of the County of York ... by C. Greenwood. Engraved by J. & C. Walker.

MLA

Map of the East Riding of the County of York ... by C. Greenwood. Engraved by J. & C. Walker. Greenwood & Co., 1834. https://collections.library.yale.edu/catalog/15309155.

APA, 6th edition

Map of the East Riding of the County of York ... by C. Greenwood. Engraved by J. & C. Walker. (1834). [Maps]. Greenwood & Co., https://collections.library.yale.edu/catalog/15309155.