Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.