PETTINGER RICHARD. (1994). INTRODUCTION TO MANAGEMENT. MACMILLAN.
Lua i Stíl Chicago (17ú heag.)PETTINGER RICHARD. INTRODUCTION TO MANAGEMENT. LONDON: MACMILLAN, 1994.
Lua MLA (9ú heag.)PETTINGER RICHARD. INTRODUCTION TO MANAGEMENT. MACMILLAN, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.