Não informado. European series. Political and Economic Planning.
Lua i Stíl Chicago (17ú heag.)Não informado. European Series. London: Political and Economic Planning.
Lua MLA (8ú heag.)Não informado. European Series. Political and Economic Planning.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.