MLA

Bartholomew, John, and Son. Commercial Map of South America / by J.G. Bartholomew ; Revised by John Samson. John Bartholomew & Co., 1908. https://collections.library.yale.edu/catalog/15827859.

APA, 6th edition

Bartholomew, J., & S. (1908). Commercial map of South America / by J.G. Bartholomew ; revised by John Samson. [Maps]. John Bartholomew & Co., https://collections.library.yale.edu/catalog/15827859.