APA (7th ed.) Citation

Olson, E. C., & Whitmarsh, A. (1944). Foreign maps. Harper & brothers.

Chicago Style (17th ed.) Citation

Olson, Everett C., and Agnes Whitmarsh. Foreign Maps. New York, London: Harper & brothers, 1944.

MLA (9th ed.) Citation

Olson, Everett C., and Agnes Whitmarsh. Foreign Maps. Harper & brothers, 1944.