DRUCKER, P. F. (1994). Post-capitalist society. HarperBusiness.
Lua i Stíl Chicago (17ú heag.)DRUCKER, Peter F. Post-capitalist Society. New York: HarperBusiness, 1994.
Lua MLA (9ú heag.)DRUCKER, Peter F. Post-capitalist Society. HarperBusiness, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.