APA (7th ed.) Citation

Sprout, H., & Sprout, M. (1965). The ecological perspective on human affairs with special reference to international politics. Princeton University.

Chicago Style (17th ed.) Citation

Sprout, Harold, and Margaret Sprout. The Ecological Perspective on Human Affairs with Special Reference to International Politics. Princeton: Princeton University, 1965.

MLA (9th ed.) Citation

Sprout, Harold, and Margaret Sprout. The Ecological Perspective on Human Affairs with Special Reference to International Politics. Princeton University, 1965.