APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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