Cita APA (7a ed.)

Ashenfelter, O., & Layard, R. (2002). Handbook of labor economics (1st ed., 4th impression.). Elsevier.

Cita Chicago Style (17a ed.)

Ashenfelter, Orley, y Richard Layard. Handbook of Labor Economics. 1st ed., 4th impression. Amsterdam [etc.]: Elsevier, 2002.

Cita MLA (9a ed.)

Ashenfelter, Orley, y Richard Layard. Handbook of Labor Economics. 1st ed., 4th impression. Elsevier, 2002.