Dyfyniad APA

Costa, D. L. (1998). The evolution of retirement: An American economic history, 1880-1990. University of Chicago Press.

Dyfyniad Arddull Chicago

Costa, Dora L. The Evolution of Retirement: An American Economic History, 1880-1990. Chicago: University of Chicago Press, 1998.

Dyfyniad MLA

Costa, Dora L. The Evolution of Retirement: An American Economic History, 1880-1990. University of Chicago Press, 1998.

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