MLA

Bartholomew, John, and Son. North-West Africa / the Edinburgh Geographical Institute, John Bartholomew & Son, Ltd. John Bartholomew & Son, Ltd., 0AD. https://collections.library.yale.edu/catalog/15533591.

APA, 6th edition

Bartholomew, J., & S. (0 C.E.). North-West Africa / the Edinburgh Geographical Institute, John Bartholomew & Son, Ltd. [Maps]. John Bartholomew & Son, Ltd., https://collections.library.yale.edu/catalog/15533591.