International Chamber of Commerce. (1991). Guide to Effective Environmental Auditing: научное издание.
Chicago-čujuhus (17. p.)International Chamber of Commerce. Guide to Effective Environmental Auditing: научное издание. 1991.
MLA-čujuhus (9. p.)International Chamber of Commerce. Guide to Effective Environmental Auditing: научное издание. 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.