Cite

A new map of the Kingdom of France ... with all the Post Roads ...

MLA

A New Map of the Kingdom of France ... with All the Post Roads ... Robert Sayer, 1792. https://collections.library.yale.edu/catalog/15483863.

APA, 6th edition

A new map of the Kingdom of France ... with all the Post Roads ... (1792). [Maps]. Robert Sayer, https://collections.library.yale.edu/catalog/15483863.