APA (7th ed.) Citation

U. S. Employment Service. (1949). Dictionary of occupational titles. Interim release. Govt. Print. Off.

Chicago Style (17th ed.) Citation

U. S. Employment Service. Dictionary of Occupational Titles. Interim Release. Washington: Govt. Print. Off, 1949.

MLA (9th ed.) Citation

U. S. Employment Service. Dictionary of Occupational Titles. Interim Release. Govt. Print. Off, 1949.

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