ebrary, Inc, Leal Filho, W., & Gottwald, J. (2012). Educational and technological approaches to renewable energy. Peter Lang.
Čikaški stil citiranja (17. izdanje)ebrary, Inc, Walter Leal Filho, i Julia Gottwald. Educational and Technological Approaches to Renewable Energy. Frankfurt am Main: Peter Lang, 2012.
MLA način citiranja (9. izdanje)ebrary, Inc, et al. Educational and Technological Approaches to Renewable Energy. Peter Lang, 2012.
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