CAMPBELL, D. (1993). Quickbooks For Profit: Making The Numbers Work / David Campbell And Mary Campbell. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)CAMPBELL, David. Quickbooks For Profit: Making The Numbers Work / David Campbell And Mary Campbell. McGraw-Hill, 1993.
Lua MLA (8ú heag.)CAMPBELL, David. Quickbooks For Profit: Making The Numbers Work / David Campbell And Mary Campbell. McGraw-Hill, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.