Layard, R. (1994). Cost-benefit analysis (2nd ed.). Cambridge University Press.
Chicago Edition CitationLayard, Richard. Cost-benefit Analysis. 2nd ed. Cambridge: Cambridge University Press, 1994.
Deismireacht MLALayard, Richard. Cost-benefit Analysis. 2nd ed. Cambridge University Press, 1994.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.