Tohutoro APA (7th ed.)
(1990). Managing Planet Earth: Readings from Scientific American Magazine. W.H. Freeman and Company.
Tohutoru Kātū Chicago (17th ed.)
Managing Planet Earth: Readings from Scientific American Magazine. Nueva York, EUA: W.H. Freeman and Company, 1990.
Tohutoro MLA (9th ed.)
Managing Planet Earth: Readings from Scientific American Magazine. W.H. Freeman and Company, 1990.
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