एपीए उद्धरण

Ram, L. P. T. Environmental Health and Hyggiene (Ed.2 rev.).

शिकागो स्टाइल उद्धरण

Ram, Lily Pritam Telu. Environmental Health and Hyggiene. Ed.2 rev. New Delhi, Vikas Publishing House Pvt Ltd.

एमएलए उद्धरण

Ram, Lily Pritam Telu. Environmental Health and Hyggiene. Ed.2 rev.