Martinell Sempere, A. (2009). New perspectives on sustainability. Documenta Universitaria.
Chicago-čujuhus (17. p.)Martinell Sempere, Alfons. New Perspectives on Sustainability. Girona: Documenta Universitaria, 2009.
MLA-čujuhus (9. p.)Martinell Sempere, Alfons. New Perspectives on Sustainability. Documenta Universitaria, 2009.
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