Cavagnaro, E., & Curiel, G. (2012). The three levels of sustainability. Greenleaf Pub..
Citace podle Chicago (17th ed.)Cavagnaro, Elena, a George Curiel. The Three Levels of Sustainability. Sheffield, South Yorkshire, England: Greenleaf Pub., 2012.
Citace podle MLA (9th ed.)Cavagnaro, Elena, a George Curiel. The Three Levels of Sustainability. Greenleaf Pub., 2012.
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