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Lua i Stíl Chicago (17ú heag.)International Labour Office agus George Kanawaty. Introduction to Work Study. 4th (rev.) ed. Geneva: International Labour Office, 1992.
Lua MLA (9ú heag.)International Labour Office agus George Kanawaty. Introduction to Work Study. 4th (rev.) ed. International Labour Office, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.