Παραπομπή APA
Kelley, D. R., Stunkel, K. R., & Wescott, R. R. (1976). The economic superpowers and the environment: The United States, the Soviet Union, and Japan. San Francisco: W. H. Freeman.
Παραπομπή Chicago StyleKelley, Donald R., Kenneth R. Stunkel, and Richard R. Wescott. The Economic Superpowers and the Environment: The United States, the Soviet Union, and Japan. San Francisco: W. H. Freeman, 1976.
Παραπομπή MLAKelley, Donald R., Kenneth R. Stunkel, and Richard R. Wescott. The Economic Superpowers and the Environment: The United States, the Soviet Union, and Japan. San Francisco: W. H. Freeman, 1976.
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