APA (7th ed.) Citation

United States. Division of Labor Standards. (1940). Pratt and Whitney aircraft machinist and toolmaker apprentice training course. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Division of Labor Standards. Pratt and Whitney Aircraft Machinist and Toolmaker Apprentice Training Course. [Washington]: [publisher not identified], 1940.

MLA (9th ed.) Citation

United States. Division of Labor Standards. Pratt and Whitney Aircraft Machinist and Toolmaker Apprentice Training Course. [publisher not identified], 1940.

Warning: These citations may not always be 100% accurate.