Não informado. (1989). Barclays Economic Review. Barclays Bank.
Lua i Stíl Chicago (17ú heag.)Não informado. Barclays Economic Review. London: Barclays Bank, 1989.
Lua MLA (8ú heag.)Não informado. Barclays Economic Review. Barclays Bank, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.