Harper, M. (1992). Their own idea: Lessons from workers' co-operatives. Intermediate Technology Publications.
Lua i Stíl Chicago (17ú heag.)Harper, Malcolm. Their Own Idea: Lessons from Workers' Co-operatives. London: Intermediate Technology Publications, 1992.
Lua MLA (8ú heag.)Harper, Malcolm. Their Own Idea: Lessons from Workers' Co-operatives. Intermediate Technology Publications, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.