Não informado. (1960). Management Quarterly. National Rural Electric Cooperative Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Management Quarterly. Washington: National Rural Electric Cooperative Association, 1960.
Lua MLA (8ú heag.)Não informado. Management Quarterly. National Rural Electric Cooperative Association, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.