MLA

Ackerman Lith., New York, New York, Fay, Augustus, b. ca. 1824. Triangulation station and mass of mica schist- summit of Freemont's Island. https://collections.library.yale.edu/catalog/2000688.

APA, 6th edition

Ackerman Lith., New York, New York, & Fay, Augustus, b. ca. 1824. [Triangulation station and mass of mica schist- summit of Freemont's Island]. https://collections.library.yale.edu/catalog/2000688.