एपीए उद्धरण

Buchan, J. The thirty nine steps. London: Longman Green.

शिकागो स्टाइल उद्धरण

Buchan, John. The Thirty Nine Steps. London: Longman Green.

एमएलए उद्धरण

Buchan, John. The Thirty Nine Steps. London: Longman Green.