एपीए उद्धरण

World Health Organization. (1991). Surface water drainage for low income communities. B R.

शिकागो स्टाइल उद्धरण

World Health Organization. Surface Water Drainage for Low Income Communities. Delhi: B R, 1991.

एमएलए उद्धरण

World Health Organization. Surface Water Drainage for Low Income Communities. B R, 1991.