Cita APA (7th ed.)

Ashenfelter, O., & Card, D. (1999). Handbook of labor economics (1a. ed.). Elsevier.

Cita Chicago (17th ed.)

Ashenfelter, Orley, i David Card. Handbook of Labor Economics. 1a. ed. Amsterdam: Elsevier, 1999.

Cita MLA (9th ed.)

Ashenfelter, Orley, i David Card. Handbook of Labor Economics. 1a. ed. Elsevier, 1999.