Não informado. (1982). Political Geography. Butterworth Scientific.
Lua i Stíl Chicago (17ú heag.)Não informado. Political Geography. Oxford, Inglaterra: Butterworth Scientific, 1982.
Lua MLA (8ú heag.)Não informado. Political Geography. Butterworth Scientific, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.