Citazione Stile APA (7a Edizione)

Card, D., & Ashenfelter, O. (2011). Handbook of labor economics. Elsevier.

Citazione stile Chigago Style (17a edizione)

Card, David, e Orley Ashenfelter. Handbook of Labor Economics. Amterdam: Elsevier, 2011.

Citatione MLA (9a ed.)

Card, David, e Orley Ashenfelter. Handbook of Labor Economics. Elsevier, 2011.