Cita APA (7th ed.)
United States. Bureau of Labor Statistics. Occupational outlook handbook. Bureau of Labor Statistics.
Cita Chicago (17th ed.)
United States. Bureau of Labor Statistics. Occupational Outlook Handbook. Washington, D.C.: Bureau of Labor Statistics.
Cita MLA (9th ed.)
United States. Bureau of Labor Statistics. Occupational Outlook Handbook. Bureau of Labor Statistics.
Atenció: Aquestes cites poden no estar 100% correctes.