MLA

Winchell, Alexander, 1824-1891. Map of the state of Michigan colored to show the geological formations / by Alexander Winchell.. BRBL_00554. 1873]. https://collections.library.yale.edu/catalog/15814512.

APA, 6th edition

Winchell, Alexander, 1824-1891. (["BRBL_00554"])(1873])[Map of the state of Michigan colored to show the geological formations / by Alexander Winchell.]. https://collections.library.yale.edu/catalog/15814512.