Shaler, N. S. (1893). The interpretation of nature. Houghton, Mifflin and Company.
Lua i Stíl Chicago (17ú heag.)Shaler, Nathaniel Southgate. The Interpretation of Nature. Boston, New York: Houghton, Mifflin and Company, 1893.
Lua MLA (8ú heag.)Shaler, Nathaniel Southgate. The Interpretation of Nature. Houghton, Mifflin and Company, 1893.
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