MLA

A New Map of Nova Scotia and Cape Breton Island with the Adjacent Parts of New England and Canada ... Thos. Jefferys, 1786. https://collections.library.yale.edu/catalog/15604306.

APA, 6th edition

A new map of Nova Scotia and Cape Breton Island with the adjacent parts of New England and Canada ... (1786). [Maps]. Thos. Jefferys, https://collections.library.yale.edu/catalog/15604306.