APA aipamena

The United States Department of Labor. (2008). Occupational Outlook Handbook 2008-09 Edition (Occupational Outlook Handbook ). U.S.A: MC Graw Hill.

Chicago Style aipamena

The United States Department of Labor. Occupational Outlook Handbook 2008-09 Edition (Occupational Outlook Handbook ). U.S.A: MC Graw Hill, 2008.

MLA aipamena

The United States Department of Labor. Occupational Outlook Handbook 2008-09 Edition (Occupational Outlook Handbook ). U.S.A: MC Graw Hill, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.