United States. Office of Personnel Management. Statistical Analysis and Services Division. Occupations of federal white-collar and blue-collar workers. U.S. Office of Personnel Management.
Chicago Style (17th ed.) CitationUnited States. Office of Personnel Management. Statistical Analysis and Services Division. Occupations of Federal White-collar and Blue-collar Workers. Washington, DC: U.S. Office of Personnel Management.
MLA (9th ed.) CitationUnited States. Office of Personnel Management. Statistical Analysis and Services Division. Occupations of Federal White-collar and Blue-collar Workers. U.S. Office of Personnel Management.
Warning: These citations may not always be 100% accurate.