Williams, F. (1935). The sky's the limit: Plain words on plane profits. London: Labour.
Chicago Style (17th ed.) CitationWilliams, Francis. The Sky's the Limit: Plain Words on Plane Profits. London: Labour, 1935.
MLA (8th ed.) CitationWilliams, Francis. The Sky's the Limit: Plain Words on Plane Profits. London: Labour, 1935.
Warning: These citations may not always be 100% accurate.