एपीए उद्धरण

W H O. (1991). Surface water drainage for low income communities. World Health Organisation.

शिकागो स्टाइल उद्धरण

W H O. Surface Water Drainage for Low Income Communities. Geneva: World Health Organisation, 1991.

एमएलए उद्धरण

W H O. Surface Water Drainage for Low Income Communities. World Health Organisation, 1991.