The kingdom of Prussia, and its newly incorporated province of Polish Prussia now named Western Prussia : with the territory of Dantzick / by John Roberts, Geographer.
MLA
Roberts, John, et al. The Kingdom of Prussia, and Its Newly Incorporated Province of Polish Prussia Now Named Western Prussia : with the Territory of Dantzick / by John Roberts, Geographer. 0AD. https://collections.library.yale.edu/catalog/15482979.
APA, 6th edition
Roberts, J., engraver, & geographer. (0 C.E.). The kingdom of Prussia, and its newly incorporated province of Polish Prussia now named Western Prussia : with the territory of Dantzick / by John Roberts, Geographer. [Maps]. https://collections.library.yale.edu/catalog/15482979.