Olson, M. (1971). The logic of collective action: Public goods and the theory of groups. Harvard University Press.
Lua i Stíl Chicago (17ú heag.)Olson, Mancur. The Logic of Collective Action: Public Goods and the Theory of Groups. Cambridge, Mass.; London: Harvard University Press, 1971.
Lua MLA (8ú heag.)Olson, Mancur. The Logic of Collective Action: Public Goods and the Theory of Groups. Harvard University Press, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.