Marshak, S. (2012). Earth: : portrait of a planet.Ed.4. W.W.Norton and company.
Chicago Style aipamenaMarshak, Stephen. Earth: : Portrait of a Planet.Ed.4. New York: W.W.Norton and company, 2012.
MLA aipamenaMarshak, Stephen. Earth: : Portrait of a Planet.Ed.4. W.W.Norton and company, 2012.
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