Purday, H. F. P. (1937). Diesel engine design (4th ed.). Constable.
Cita Chicago (17th ed.)Purday, Herbert Frank Percy. Diesel Engine Design. 4th ed. London: Constable, 1937.
Cita MLA (8th ed.)Purday, Herbert Frank Percy. Diesel Engine Design. 4th ed. Constable, 1937.
Atenció: Aquestes cites poden no estar 100% correctes.