The post office plan of London [map] / engraved by Jas. Wyld, geographer to the Queen ...
MLA
Wyld, James, 1812-1887. The post office plan of London [map] / engraved by Jas. Wyld, geographer to the Queen .... BRBL_00051. [ca. 1880]. https://collections.library.yale.edu/catalog/15286754.
APA, 6th edition
Wyld, James, 1812-1887. (["BRBL_00051"])([ca. 1880])[The post office plan of London [map] / engraved by Jas. Wyld, geographer to the Queen ...]. https://collections.library.yale.edu/catalog/15286754.