United States. Department of the Navy. (1929). Change in method of removing worn valve stem guides from Pratt and Whitney R-1340 and R-1690 engine cylinders. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Department of the Navy. Change in Method of Removing Worn Valve Stem Guides from Pratt and Whitney R-1340 and R-1690 Engine Cylinders. [Washington]: [publisher not identified], 1929.
MLA (9th ed.) CitationUnited States. Department of the Navy. Change in Method of Removing Worn Valve Stem Guides from Pratt and Whitney R-1340 and R-1690 Engine Cylinders. [publisher not identified], 1929.
Warning: These citations may not always be 100% accurate.