United States Environmental Protection Agency. Emission factor documentation for AP-42 , coffee roasting.
Chicago-čujuhus (17. p.)United States Environmental Protection Agency. Emission Factor Documentation for AP-42 , Coffee Roasting.
MLA-čujuhus (9. p.)United States Environmental Protection Agency. Emission Factor Documentation for AP-42 , Coffee Roasting.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.