DELTZER BERNARD A. (1979). CONTEMPORARY MANAGEMENT CONCEPT. GRID PUBLISHERS.
Lua i Stíl Chicago (17ú heag.)DELTZER BERNARD A. CONTEMPORARY MANAGEMENT CONCEPT. COLUMBUS: GRID PUBLISHERS, 1979.
Lua MLA (9ú heag.)DELTZER BERNARD A. CONTEMPORARY MANAGEMENT CONCEPT. GRID PUBLISHERS, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.