APA aipamena

Sen, A. (1970). Collective Choice and Social Welfare. ELSEVIER.

Chicago Style aipamena

Sen, A.K. Collective Choice and Social Welfare. ELSEVIER, 1970.

MLA aipamena

Sen, A.K. Collective Choice and Social Welfare. ELSEVIER, 1970.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.