Purday, H. F. P. (1937). Diesel engine design (4th ed.). Constable.
Dyfyniad Arddull ChicagoPurday, Herbert Frank Percy. Diesel Engine Design. 4th ed. London: Constable, 1937.
Dyfyniad MLAPurday, Herbert Frank Percy. Diesel Engine Design. 4th ed. Constable, 1937.
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