Tohutoro APA (7th ed.)
Klöpffer, W., & Grahl, B. (2014). Life cycle assessment: A guide to best practice. Wiley-VCH.
Tohutoru Kātū Chicago (17th ed.)
Klöpffer, Walter, me Birgit Grahl. Life Cycle Assessment: A Guide to Best Practice. Weinheim an der Bergstrasse, Germany: Wiley-VCH, 2014.
Tohutoro MLA (9th ed.)
Klöpffer, Walter, me Birgit Grahl. Life Cycle Assessment: A Guide to Best Practice. Wiley-VCH, 2014.
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