Cunningham, W. P. (2007). Environmental scienceA global concernWilliam Cunning, Mary Ann Cunningham, Barbara Woodworth Saigo. Higher Education.
Čikaški stil citiranja (17. izdanje)Cunningham, William P. Environmental ScienceA Global ConcernWilliam Cunning, Mary Ann Cunningham, Barbara Woodworth Saigo. Higher Education, 2007.
MLA način citiranja (8. izdanje)Cunningham, William P. Environmental ScienceA Global ConcernWilliam Cunning, Mary Ann Cunningham, Barbara Woodworth Saigo. Higher Education, 2007.
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