Ehrlich, R. (2001). Nine crazy ideas in science: A few might even be true. Princeton University Press.
Citace podle Chicago (17th ed.)Ehrlich, Robert. Nine Crazy Ideas in Science: A Few Might Even Be True. Princeton, N.J.: Princeton University Press, 2001.
Citace podle MLA (9th ed.)Ehrlich, Robert. Nine Crazy Ideas in Science: A Few Might Even Be True. Princeton University Press, 2001.
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