Cita APA

Cunningham, W. P., & Woodsworth, B. Environmental science: A global concern (5th ed.). Saigo.

Chicago Edition Citation

Cunningham, William P., i Barbara Woodsworth. Environmental Science: A Global Concern. 5th ed. Saigo.

Cita MLA

Cunningham, William P., i Barbara Woodsworth. Environmental Science: A Global Concern. 5th ed. Saigo.

Atenció: Aquestes cites poden no estar 100% correctes.