APA-čujuhus (7. p.)
Heilbroner, R. L. (1974). An inquiry into the human prospect. W.W. Norton.
Chicago-čujuhus (17. p.)
Heilbroner, Robert L. An Inquiry into the Human Prospect. New York: W.W. Norton, 1974.
MLA-čujuhus (9. p.)
Heilbroner, Robert L. An Inquiry into the Human Prospect. W.W. Norton, 1974.
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