Beer, S. H. (1971). Modern British politics: A study of parties and pressure groups. Faber and Faber.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBeer, Samuel H. Modern British Politics: A Study of Parties and Pressure Groups. Faber and Faber, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBeer, Samuel H. Modern British Politics: A Study of Parties and Pressure Groups. Faber and Faber, 1971.
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