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Lua i Stíl Chicago (17ú heag.)TACK ALFRED. EXECUTIVE DEVELOPMENT. LONDON: WORLD`S WORK LTD, 1981.
Lua MLA (9ú heag.)TACK ALFRED. EXECUTIVE DEVELOPMENT. WORLD`S WORK LTD, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.