Ehrlich, A. H., & Ehrlich, P. R. (1987). Earth. Thames Methuen.
Chicago Style (17th ed.) CitationEhrlich, Anne H., and Paul R. Ehrlich. Earth. London: Thames Methuen, 1987.
MLA citiranjeEhrlich, Anne H., and Paul R. Ehrlich. Earth. Thames Methuen, 1987.
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