[Manuscript map of the Western boundaries of Massachusetts] sworn this line has bin measured this year 1764 ... a true copy N. Dwight. Saml. Messinger surveyor.
MLA
[Manuscript Map of the Western Boundaries of Massachusetts] Sworn This Line Has Bin Measured This Year 1764 ... a True Copy N. Dwight. Saml. Messinger Surveyor. 1764. https://collections.library.yale.edu/catalog/15826729.
APA, 6th edition
[Manuscript map of the Western boundaries of Massachusetts] sworn this line has bin measured this year 1764 ... a true copy N. Dwight. Saml. Messinger surveyor. (1764). [Manuscript maps]. https://collections.library.yale.edu/catalog/15826729.