Chan, W., Lo, J., & Wong, K. Hong Kong hotels' sewage: Environmental cost and saving technique.
Chicago Style aipamenaChan, Wilco., Jennifer Lo, và Kevin Wong. Hong Kong Hotels' Sewage: Environmental Cost and Saving Technique.
MLA aipamenaChan, Wilco., Jennifer Lo, và Kevin Wong. Hong Kong Hotels' Sewage: Environmental Cost and Saving Technique.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.