Pyper, R. (1996). Aspects of accountability in the British system of government. Tudor Business Pub..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPyper, Robert. Aspects of Accountability in the British System of Government. Eastham, Wirral, Merseyside: Tudor Business Pub., 1996.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPyper, Robert. Aspects of Accountability in the British System of Government. Tudor Business Pub., 1996.
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