APA (7th ed.) Citation

Liu, Y. (1999). Domestic sewage treatment by an ultra-compact biofilm reactor.

Chicago Style (17th ed.) Citation

Liu, Yun. Domestic Sewage Treatment by an Ultra-compact Biofilm Reactor. 1999.

MLA (8th ed.) Citation

Liu, Yun. Domestic Sewage Treatment by an Ultra-compact Biofilm Reactor. 1999.

Warning: These citations may not always be 100% accurate.