EXECUTIVE DEVELOPMENT. (1967). Executive development series part II. Harvard Business Review.
Lua i Stíl Chicago (17ú heag.)EXECUTIVE DEVELOPMENT. Executive Development Series Part II. USA: Harvard Business Review, 1967.
Lua MLA (9ú heag.)EXECUTIVE DEVELOPMENT. Executive Development Series Part II. Harvard Business Review, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.