Cunningham, W. P. (2004). Principles of environmental science: Inquiry and Applications. Boston, MA: McGraw-Hill.
Chicago Style aipamenaCunningham, William P. Principles of Environmental Science: Inquiry and Applications. Boston, MA: McGraw-Hill, 2004.
MLA aipamenaCunningham, William P. Principles of Environmental Science: Inquiry and Applications. Boston, MA: McGraw-Hill, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.