ENGEL HERBERT. (1990). HOW TO DELEGATE A GUIDE TO GETTING THINGS DONE (2.). JAICO PUBLISHING HOUSE.
Lua i Stíl Chicago (17ú heag.)ENGEL HERBERT. HOW TO DELEGATE A GUIDE TO GETTING THINGS DONE. 2. BOMBAY: JAICO PUBLISHING HOUSE, 1990.
Lua MLA (9ú heag.)ENGEL HERBERT. HOW TO DELEGATE A GUIDE TO GETTING THINGS DONE. 2. JAICO PUBLISHING HOUSE, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.