Dyfyniad APA

Le Grand, J., & Robinson, R. (1976). The economics of social problems. Macmillan.

Dyfyniad Arddull Chicago

Le Grand, Julian, and Ray Robinson. The Economics of Social Problems. London: Macmillan, 1976.

Dyfyniad MLA

Le Grand, Julian, and Ray Robinson. The Economics of Social Problems. Macmillan, 1976.

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