Cite

A map of the German Empire divided into its circles to which is added the Kingdom of Prussia ... By L. de la Rochette.

MLA

A Map of the German Empire Divided into Its Circles to Which Is Added the Kingdom of Prussia ... By L. De La Rochette. Bowles & Carver, 0AD. https://collections.library.yale.edu/catalog/15476386.

APA, 6th edition

A map of the German Empire divided into its circles to which is added the Kingdom of Prussia ... By L. de la Rochette. (0 C.E.). [Maps]. Bowles & Carver, https://collections.library.yale.edu/catalog/15476386.