International Chamber of Commerce. (1991). Guide to Effective Environmental Auditing: научное издание.
Chicago Style (17. basım) AtıfInternational Chamber of Commerce. Guide to Effective Environmental Auditing: научное издание. 1991.
MLA (9th ed.) AtıfInternational Chamber of Commerce. Guide to Effective Environmental Auditing: научное издание. 1991.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..