Dyfyniad APA

Sen,Amartya K. (1979). Collective choice and social welfare. Elsevier Science Publishers.

Dyfyniad Arddull Chicago

Sen,Amartya K. Collective Choice and Social Welfare. Netherland: Elsevier Science Publishers, 1979.

Dyfyniad MLA

Sen,Amartya K. Collective Choice and Social Welfare. Elsevier Science Publishers, 1979.

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