Cunningham, W. P., Cunningham, M. A., & Saigo, B. W. (2005). Environmental science: A global concern (8th ed.). McGraw-Hill Higher Education.
Lua i Stíl Chicago (17ú heag.)Cunningham, William P., Mary Ann Cunningham, agus Barbara Woodworth Saigo. Environmental Science: A Global Concern. 8th ed. Boston: McGraw-Hill Higher Education, 2005.
Lua MLA (8ú heag.)Cunningham, William P., et al. Environmental Science: A Global Concern. 8th ed. McGraw-Hill Higher Education, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.