Kahn, H., & Brown, W. M. (1977). The Next 200 years: A Scenario for America and the World.
Čikaški stil citiranjaKahn, Herman, i William Marte Brown. The Next 200 Years: A Scenario for America and the World. London, 1977.
MLA način citiranjaKahn, Herman, i William Marte Brown. The Next 200 Years: A Scenario for America and the World. 1977.
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