Cita APA (7th ed.)
Smith, G. J. C., Steck, H. J., & Surette. Gerald. (1974). Our ecological crisis: It's biological, economic and political dimensions. Macmillan Publishing.
Cita Chicago (17th ed.)
Smith, Grahame J. C., Henry J. Steck, i Surette. Gerald. Our Ecological Crisis: It's Biological, Economic and Political Dimensions. New York: Macmillan Publishing, 1974.
Cita MLA (9th ed.)
Smith, Grahame J. C., et al. Our Ecological Crisis: It's Biological, Economic and Political Dimensions. Macmillan Publishing, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.