California Stormwater Quality Association. Liquid waste management.
Chicago-čujuhus (17. p.)California Stormwater Quality Association. Liquid Waste Management.
MLA-čujuhus (9. p.)California Stormwater Quality Association. Liquid Waste Management.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.