Cunningham, W. P., & Cunningham, M. A. (2006). Principles of environmental science: Inquiry and applications (Third edition.). McGraw Hill Higher Education.
Chicago-Zitierstil (17. Ausg.)Cunningham, William P., und Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. Third edition. Boston: McGraw Hill Higher Education, 2006.
MLA-Zitierstil (9. Ausg.)Cunningham, William P., und Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. Third edition. McGraw Hill Higher Education, 2006.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.