(1962). Outer space: Prospects for man and society. Englewood Cliffs: The American Assembly Columbia University.
Čikaški stil citiranjaOuter Space: Prospects for Man and Society. Englewood Cliffs: The American Assembly Columbia University, 1962.
MLA način citiranjaOuter Space: Prospects for Man and Society. Englewood Cliffs: The American Assembly Columbia University, 1962.
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