CAMPBELL A EDT. (1997). CORE COMPETENCY-BASED STRATEGY. I T B P.
Lua i Stíl Chicago (17ú heag.)CAMPBELL A EDT. CORE COMPETENCY-BASED STRATEGY. LONDON: I T B P, 1997.
Lua MLA (9ú heag.)CAMPBELL A EDT. CORE COMPETENCY-BASED STRATEGY. I T B P, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.