APA (7th ed.) Citation

Highsmith, R. M., & Northam, R. M. (1968). World economic activities: A geographic analysis. Harcourt, Brace & World.

Chicago Style (17th ed.) Citation

Highsmith, Richard Morgan, and Ray M. Northam. World Economic Activities: A Geographic Analysis. New York: Harcourt, Brace & World, 1968.

MLA (9th ed.) Citation

Highsmith, Richard Morgan, and Ray M. Northam. World Economic Activities: A Geographic Analysis. Harcourt, Brace & World, 1968.