APA (7th ed.) Citation

Harker, R. W. (1979). The engines were Rolls-Royce: An informal history of that famous company. Macmillan.

Chicago Style (17th ed.) Citation

Harker, Ronald W. The Engines Were Rolls-Royce: An Informal History of That Famous Company. New York: Macmillan, 1979.

MLA (9th ed.) Citation

Harker, Ronald W. The Engines Were Rolls-Royce: An Informal History of That Famous Company. Macmillan, 1979.