APA aipamena

Orley C. Ashenfelter and David Card. (1999). Handbook of Labor Economics. ELSEVIER.

Chicago Style aipamena

Orley C. Ashenfelter and David Card. Handbook of Labor Economics. ELSEVIER, 1999.

MLA aipamena

Orley C. Ashenfelter and David Card. Handbook of Labor Economics. ELSEVIER, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.