Cita APA (7a ed.)
Estados Unidos. Department of Labor Employment and Training Administration. (1991). Dictionary of occupational titles.
Cita estilo Chicago (17a ed.)
Estados Unidos. Department of Labor Employment and Training Administration. Dictionary of Occupational Titles. 1991.
Cita MLA (9a ed.)
Estados Unidos. Department of Labor Employment and Training Administration. Dictionary of Occupational Titles. 1991.
Precaución: Estas citas no son 100% exactas.