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Lua i Stíl Chicago (17ú heag.)SILK LEONARD. ECONOMICS IN PLAIN ENGLISH. NEW YORK: SIMON & SCHUSTER INC, 1978.
Lua MLA (9ú heag.)SILK LEONARD. ECONOMICS IN PLAIN ENGLISH. SIMON & SCHUSTER INC, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.