CHACKO GEORGE K. (1979). MANAGEMENT INFORMATION SYSTEMS. PETROCELLI BOOKS.
Lua i Stíl Chicago (17ú heag.)CHACKO GEORGE K. MANAGEMENT INFORMATION SYSTEMS. NEW YORK: PETROCELLI BOOKS, 1979.
Lua MLA (9ú heag.)CHACKO GEORGE K. MANAGEMENT INFORMATION SYSTEMS. PETROCELLI BOOKS, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.