APA (7th ed.) Citation

Watson, J. W. (1963). North America, its countries and regions. Longmans.

Chicago Style (17th ed.) Citation

Watson, J. Wreford. North America, Its Countries and Regions. [London]: Longmans, 1963.

MLA (9th ed.) Citation

Watson, J. Wreford. North America, Its Countries and Regions. Longmans, 1963.