Obrinsky, M. (1983). Profit theory and capitalism. University of Pennsylvania Press.
Lua i Stíl Chicago (17ú heag.)Obrinsky, Mark. Profit Theory and Capitalism. Philadelphia: University of Pennsylvania Press, 1983.
Lua MLA (9ú heag.)Obrinsky, Mark. Profit Theory and Capitalism. University of Pennsylvania Press, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.