DATE C J. (2009). INTRODUCTION TO DATABASE SYSTEMS 8TH ED (8TH ED.). PEARSON EDUCATION.
Lua i Stíl Chicago (17ú heag.)DATE C J. INTRODUCTION TO DATABASE SYSTEMS 8TH ED. 8TH ED. NEW DELHI: PEARSON EDUCATION, 2009.
Lua MLA (9ú heag.)DATE C J. INTRODUCTION TO DATABASE SYSTEMS 8TH ED. 8TH ED. PEARSON EDUCATION, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.