Map of the city of Chicago, state of Illinois, United States of America [cartographic material] : showing its extent and boundaries as described in The standard guide to Chicago written and compiled by John J. Flinn, Flinn & Sheppard, publishers.
MLA
McNally, Rand, and Company. Map of the City of Chicago, State of Illinois, United States of America [Cartographic Material] : Showing Its Extent and Boundaries as Described in The Standard Guide to Chicago Written and Compiled by John J. Flinn, Flinn & Sheppard, Publishers. Rand McNally & Co., 0AD. https://collections.library.yale.edu/catalog/15814405.
APA, 6th edition
McNally, R., & C. (0 C.E.). Map of the city of Chicago, state of Illinois, United States of America [cartographic material] : showing its extent and boundaries as described in The standard guide to Chicago written and compiled by John J. Flinn, Flinn & Sheppard, publishers. [Maps]. Rand McNally & Co., https://collections.library.yale.edu/catalog/15814405.