Lua APA (7ú heag.)

Cunningham, W. P. (2007). Environmental scienceA global concernWilliam Cunning, Mary Ann Cunningham, Barbara Woodworth Saigo. Higher Education.

Lua i Stíl Chicago (17ú heag.)

Cunningham, William P. Environmental ScienceA Global ConcernWilliam Cunning, Mary Ann Cunningham, Barbara Woodworth Saigo. Higher Education, 2007.

Lua MLA (8ú heag.)

Cunningham, William P. Environmental ScienceA Global ConcernWilliam Cunning, Mary Ann Cunningham, Barbara Woodworth Saigo. Higher Education, 2007.

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