United States Employment Service. Conversion table of code and title changes, third to fourth edition, Dictionary of occupational titles.
Chicago Style (17th ed.) CitationUnited States Employment Service. Conversion Table of Code and Title Changes, Third to Fourth Edition, Dictionary of Occupational Titles.
MLA (9th ed.) CitationUnited States Employment Service. Conversion Table of Code and Title Changes, Third to Fourth Edition, Dictionary of Occupational Titles.
Warning: These citations may not always be 100% accurate.