Keraf, A. (2010). Etika lingkungan hidup. Kompas.
Chicago Style (17th ed.) CitationKeraf, A..Sony. Etika Lingkungan Hidup. Kompas, 2010.
MLA (8th ed.) CitationKeraf, A..Sony. Etika Lingkungan Hidup. Kompas, 2010.
Warning: These citations may not always be 100% accurate.