APA ציטוט

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

Chicago Edition Citation

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

ציטוט MLA

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