MLA

Morgan, Nicholas G. (Nicholas Groesbeck), 1884-1971. Pioneer map, Plat "D" and Empire Mill Tract : Great Salt Lake City, Salt Lake County, Utah / compiled and copyrighted by Nicholas G. Morgan, Sr. ; drawn by J.B. Ireland.. BRBL_00592. [1950?]. https://collections.library.yale.edu/catalog/15818489.

APA, 6th edition

Morgan, Nicholas G. (Nicholas Groesbeck), 1884-1971. (["BRBL_00592"])([1950?])[Pioneer map, Plat "D" and Empire Mill Tract : Great Salt Lake City, Salt Lake County, Utah / compiled and copyrighted by Nicholas G. Morgan, Sr. ; drawn by J.B. Ireland.]. https://collections.library.yale.edu/catalog/15818489.