Cite

New Haven, with areas needing more small parks for local purposes shown in black.

MLA

Commission, New Haven Civic Improvement. New Haven, with Areas Needing More Small Parks for Local Purposes Shown in Black. 1910. https://collections.library.yale.edu/catalog/10012532.

APA, 6th edition

Commission, N. H. C. I. (1910). New Haven, with areas needing more small parks for local purposes shown in black. [Books (part of)]. https://collections.library.yale.edu/catalog/10012532.