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Lua i Stíl Chicago (17ú heag.)Western Regional Science Association. The Annals of Regional Science. Berlin: Springer, 1967.
Lua MLA (8ú heag.)Western Regional Science Association. The Annals of Regional Science. Springer, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.