Muller, W. (1977). The kept men! the first century of Trade Union representation in the British House of Commons 1874-1975. Harvester.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMuller, W.D. The Kept Men! the First Century of Trade Union Representation in the British House of Commons 1874-1975. Harvester, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMuller, W.D. The Kept Men! the First Century of Trade Union Representation in the British House of Commons 1874-1975. Harvester, 1977.
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