Dyfyniad APA

Becker, G. S., & Coyle, D. (2011). The challenge of immigration: A radical solution. Institute of Economic Affairs.

Dyfyniad Arddull Chicago

Becker, Gary S., and Diane Coyle. The Challenge of Immigration: A Radical Solution. London: Institute of Economic Affairs, 2011.

Dyfyniad MLA

Becker, Gary S., and Diane Coyle. The Challenge of Immigration: A Radical Solution. Institute of Economic Affairs, 2011.

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