Goldfarb, T. D. (1987). Taking sides clashing views on controversial Environmental issues (2ª ed.). The Dushkin.
Lua i Stíl Chicago (17ú heag.)Goldfarb, Theodere D. Taking Sides Clashing Views on Controversial Environmental Issues. 2ª ed. The Dushkin, 1987.
Lua MLA (9ú heag.)Goldfarb, Theodere D. Taking Sides Clashing Views on Controversial Environmental Issues. 2ª ed. The Dushkin, 1987.
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