MLA

Company, Kansas Pacific Railway. Kansas Pacific Railway, Is 188 Miles the Shortest Route from Kansas City or Leavenworth to Denver. 1873. https://collections.library.yale.edu/catalog/2032083.

APA, 6th edition

Company, K. P. R. (1873). Kansas Pacific Railway, is 188 miles the shortest route from Kansas City or Leavenworth to Denver. [Advertisements, Promotional literature]. https://collections.library.yale.edu/catalog/2032083.