George Smethurst. (1988). Basic water treatment for application world-wide. London: ThomasTelford.
शिकागो स्टाइल उद्धरणGeorge Smethurst. Basic Water Treatment for Application World-wide. London: ThomasTelford, 1988.
एमएलए उद्धरणGeorge Smethurst. Basic Water Treatment for Application World-wide. London: ThomasTelford, 1988.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.