Cite

[Map of one hundred square miles round Abury; showing the British and Roman Stone and Earthworks of the Downs of North Wilts; by the Rev. A.C. Smith.

MLA

[Map of One Hundred Square Miles Round Abury; Showing the British and Roman Stone and Earthworks of the Downs of North Wilts; by the Rev. A.C. Smith. Whitman & Bass, 1884. https://collections.library.yale.edu/catalog/15826811.

APA, 6th edition

[Map of one hundred square miles round Abury; showing the British and Roman Stone and Earthworks of the Downs of North Wilts; by the Rev. A.C. Smith. (1884). [Maps]. Whitman & Bass, https://collections.library.yale.edu/catalog/15826811.