एपीए उद्धरण

Calvert, P. (1990). Revolution and couter-revolution. Open University.

शिकागो स्टाइल उद्धरण

Calvert, Peter. Revolution and Couter-revolution. Buckingham: Open University, 1990.

एमएलए उद्धरण

Calvert, Peter. Revolution and Couter-revolution. Open University, 1990.