Sim, L. H. (1992). Copper uptake by activated sludge.
Chicago Style (17th ed.) CitationSim, Lai Har. Copper Uptake by Activated Sludge. Kuala Lumpur, 1992.
MLA (8th ed.) CitationSim, Lai Har. Copper Uptake by Activated Sludge. 1992.
Warning: These citations may not always be 100% accurate.