एपीए उद्धरण

Oakley, R. (1971). political year 1971. Pitman.

शिकागो स्टाइल उद्धरण

Oakley, Robin. Political Year 1971. London: Pitman, 1971.

एमएलए उद्धरण

Oakley, Robin. Political Year 1971. Pitman, 1971.