Map of the City of New Haven from actual survey by D.W. Buckingham, county surveyor.
MLA
Map of the City of New Haven from Actual Survey by D.W. Buckingham, County Surveyor. Jocelyn, Darling & Co., 1830. https://collections.library.yale.edu/catalog/15827462.
APA, 6th edition
Map of the City of New Haven from actual survey by D.W. Buckingham, county surveyor. (1830). [Maps]. Jocelyn, Darling & Co., https://collections.library.yale.edu/catalog/15827462.