Cita APA (7a ed.)

Mulligan, C. B. (1998). Substitution over time: Another look at life cycle labor supply. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Mulligan, Casey B. Substitution over Time: Another Look at Life Cycle Labor Supply. Cambridge, MA: National Bureau of Economic Research, 1998.

Cita MLA (9a ed.)

Mulligan, Casey B. Substitution over Time: Another Look at Life Cycle Labor Supply. National Bureau of Economic Research, 1998.