Williams, G. R. (1972). The hidden world of Scotland Yard. Hutchinson.
Chicago Style (17th ed.) CitationWilliams, Guy R. The Hidden World of Scotland Yard. London: Hutchinson, 1972.
MLA (8th ed.) CitationWilliams, Guy R. The Hidden World of Scotland Yard. Hutchinson, 1972.
Warning: These citations may not always be 100% accurate.