एपीए उद्धरण

Gibbs Philip. (1930). Since then. London: William Heinemann.

शिकागो स्टाइल उद्धरण

Gibbs Philip. Since Then. London: William Heinemann, 1930.

एमएलए उद्धरण

Gibbs Philip. Since Then. London: William Heinemann, 1930.