एपीए उद्धरण

Townsend,, A. (2010). Air pollution. Apple Academics.

शिकागो स्टाइल उद्धरण

Townsend,, Amy. Air Pollution. Apple Academics, 2010.

एमएलए उद्धरण

Townsend,, Amy. Air Pollution. Apple Academics, 2010.