Dyfyniad APA

Sen, A. (2017). Collective choice and social welfare expanded edition. Penguin Books.

Dyfyniad Arddull Chicago

Sen, Amartya. Collective Choice and Social Welfare Expanded Edition. UK: Penguin Books, 2017.

Dyfyniad MLA

Sen, Amartya. Collective Choice and Social Welfare Expanded Edition. Penguin Books, 2017.

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