Goldfarb, T. D. (1987). Taking sides clashing views on controversial Environmental issues (2ª ed.). The Dushkin.
Cita Chicago (17th ed.)Goldfarb, Theodere D. Taking Sides Clashing Views on Controversial Environmental Issues. 2ª ed. The Dushkin, 1987.
Cita MLA (9th ed.)Goldfarb, Theodere D. Taking Sides Clashing Views on Controversial Environmental Issues. 2ª ed. The Dushkin, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.