एपीए उद्धरण

Ayerst, D. (1971). Guardian: Biography of news paper. Collins.

शिकागो स्टाइल उद्धरण

Ayerst, David. Guardian: Biography of News Paper. london: Collins, 1971.

एमएलए उद्धरण

Ayerst, David. Guardian: Biography of News Paper. Collins, 1971.