APA (7th ed.) Citation

United States. Division of Labor Standards. (1942). National apprenticeship standards for the electrical construction industry. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Division of Labor Standards. National Apprenticeship Standards for the Electrical Construction Industry. [Washington]: [publisher not identified], 1942.

MLA (9th ed.) Citation

United States. Division of Labor Standards. National Apprenticeship Standards for the Electrical Construction Industry. [publisher not identified], 1942.