MLA

Burr, David H., 1803-1875. Map of Illinois & Missouri : exhibiting the post offices, post roads, canals, rail roads &c. / by David H. Burr.. BRBL_00547. [1839?]. https://collections.library.yale.edu/catalog/15814396.

APA, 6th edition

Burr, David H., 1803-1875. (["BRBL_00547"])([1839?])[Map of Illinois & Missouri : exhibiting the post offices, post roads, canals, rail roads &c. / by David H. Burr.]. https://collections.library.yale.edu/catalog/15814396.