APA (7th ed.) Zitazioa
Yang, X. (2010). Potential of activated sludge utilization. Nova Science Publishers.
Chicago Style (17th ed.) Zitazioa
Yang, Xiaoyi. Potential of Activated Sludge Utilization. New York: Nova Science Publishers, 2010.
MLA (9th ed.) Zitazioa
Yang, Xiaoyi. Potential of Activated Sludge Utilization. Nova Science Publishers, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.