APA aipamena

John Piggott, A. W. (2016). Handbook of the Economics of Population Aging. ELSEVIER.

Chicago Style aipamena

John Piggott, Alan Woodland. Handbook of the Economics of Population Aging. ELSEVIER, 2016.

MLA aipamena

John Piggott, Alan Woodland. Handbook of the Economics of Population Aging. ELSEVIER, 2016.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.