APA (7th ed.) Citation

Roberts, G. K. (1970). Political parties and pressure-groups in Britain. Weidenfeld & Nicolson.

Chicago Style (17th ed.) Citation

Roberts, Geoffrey K. Political Parties and Pressure-groups in Britain. London: Weidenfeld & Nicolson, 1970.

MLA (9th ed.) Citation

Roberts, Geoffrey K. Political Parties and Pressure-groups in Britain. Weidenfeld & Nicolson, 1970.