Sprout, H., & Sprout, M. (1965). The ecological perspective on human affairs with special reference to international politics. Princeton University.
Citace podle Chicago (17th ed.)Sprout, Harold, a Margaret Sprout. The Ecological Perspective on Human Affairs with Special Reference to International Politics. Princeton: Princeton University, 1965.
Citace podle MLA (9th ed.)Sprout, Harold, a Margaret Sprout. The Ecological Perspective on Human Affairs with Special Reference to International Politics. Princeton University, 1965.
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