Attfield, D. H. (1893). The Probable Destruction of Bacteria in Polluted River Water by Infusoria.
शिकागो स्टाइल उद्धरणAttfield, D. Harvey. The Probable Destruction of Bacteria in Polluted River Water By Infusoria. 1893.
एमएलए उद्धरणAttfield, D. Harvey. The Probable Destruction of Bacteria in Polluted River Water By Infusoria. 1893.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.