Map of the County of Dorset ... by C. & J. Greenwood. Engraved by H. Frost.
MLA
Map of the County of Dorset ... by C. & J. Greenwood. Engraved by H. Frost. Greenwood & Co., 1829. https://collections.library.yale.edu/catalog/15349992.
APA, 6th edition
Map of the County of Dorset ... by C. & J. Greenwood. Engraved by H. Frost. (1829). [Maps]. Greenwood & Co., https://collections.library.yale.edu/catalog/15349992.