Cunningham, W. P., & Cunningham, M. A. (2004). Principles of environmental science: Inquiry and applications (2nd ed.). Boston: McGraw-Hill Higher Education.
Chicago-стиль цитированияCunningham, William P., và Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. 2nd ed. Boston: McGraw-Hill Higher Education, 2004.
MLA-цитированиеCunningham, William P., và Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. 2nd ed. Boston: McGraw-Hill Higher Education, 2004.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.