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Lua i Stíl Chicago (17ú heag.)Careers Research and Advisory Centre (Cambridge, England), A. G. Watts, Donald Edwin Super, agus Jennifer M. Kidd. Career Development in Britain. Cambridge: Published for CRAC by Hobsons Press, 1981.
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Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.