Radder, H. (2006). The world observed, the world conceived. University of Pittsburgh Press.
Citace podle Chicago (17th ed.)Radder, Hans. The World Observed, the World Conceived. Pittsburgh, Pennsylvania: University of Pittsburgh Press, 2006.
Citace podle MLA (9th ed.)Radder, Hans. The World Observed, the World Conceived. University of Pittsburgh Press, 2006.
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