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