Cita APA (7a ed.)

Heckman, J. J., Lochner, L., & Cossa, R. D. (2002). Learning-by-doing vs. on-the-job training: Using variation induced by the EITC to distinguish between models of skill formation. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Heckman, James Joseph, Lance Lochner, y Ricardo Daniel Cossa. Learning-by-doing Vs. On-the-job Training: Using Variation Induced by the EITC to Distinguish Between Models of Skill Formation. Cambridge, MA: National Bureau of Economic Research, 2002.

Cita MLA (9a ed.)

Heckman, James Joseph, et al. Learning-by-doing Vs. On-the-job Training: Using Variation Induced by the EITC to Distinguish Between Models of Skill Formation. National Bureau of Economic Research, 2002.