Cita APA (7th ed.)
Davy, M. J. B., & Richards, G. T. (1930). The Propulsion of aircraft: A brief outline of the history. Stat. Off.
Cita Chicago (17th ed.)
Davy, M. J. B., i G. Tilghman Richards. The Propulsion of Aircraft: A Brief Outline of the History. London: Stat. Off, 1930.
Cita MLA (9th ed.)
Davy, M. J. B., i G. Tilghman Richards. The Propulsion of Aircraft: A Brief Outline of the History. Stat. Off, 1930.
Atenció: Aquestes cites poden no estar 100% correctes.