Não informado. (1970). Brookings Papers on Economic Activity. Brookings Institution.
Lua i Stíl Chicago (17ú heag.)Não informado. Brookings Papers on Economic Activity. Washington: Brookings Institution, 1970.
Lua MLA (8ú heag.)Não informado. Brookings Papers on Economic Activity. Brookings Institution, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.