Tohutoro APA (7th ed.)
Cavagnaro, E., & Curiel, G. (2012). The three levels of sustainability. Greenleaf Pub..
Tohutoru Kātū Chicago (17th ed.)
Cavagnaro, Elena, me George Curiel. The Three Levels of Sustainability. Sheffield, South Yorkshire, England: Greenleaf Pub., 2012.
Tohutoro MLA (9th ed.)
Cavagnaro, Elena, me George Curiel. The Three Levels of Sustainability. Greenleaf Pub., 2012.
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