Powell, C., & Butler, A. (1980). The parliamentary and scientific committee : the first forty years, 1939-1979 / compiled by Christopher Powell and Arthur Butler: The first forty years, 1939-1979. Croom Helm.
Chicago Style (17th ed.) CitationPowell, Christopher, and Arthur Butler. The Parliamentary and Scientific Committee : The First Forty Years, 1939-1979 / Compiled by Christopher Powell and Arthur Butler: The First Forty Years, 1939-1979. London: Croom Helm, 1980.
MLA (9th ed.) CitationPowell, Christopher, and Arthur Butler. The Parliamentary and Scientific Committee : The First Forty Years, 1939-1979 / Compiled by Christopher Powell and Arthur Butler: The First Forty Years, 1939-1979. Croom Helm, 1980.
Warning: These citations may not always be 100% accurate.