MLA

of New Jersey, Geological Survey. A Topographical Map of Egg Harbor and Vicinity [Cartographic Material] : Including the Atlantic Shore from Barnegat Bay to Egg Harbor. Geological Survey of New Jersey, 1888. https://collections.library.yale.edu/catalog/15824418.

APA, 6th edition

of New Jersey, G. S. (1888). A topographical map of Egg Harbor and vicinity [cartographic material] : including the Atlantic shore from Barnegat Bay to Egg Harbor. [Topographical maps]. Geological Survey of New Jersey, https://collections.library.yale.edu/catalog/15824418.