Leon Alexis & Leon Mathews. (1999). Database Management Systems. Leon Press.
Lua i Stíl Chicago (17ú heag.)Leon Alexis agus Leon Mathews. Database Management Systems. Chennai: Leon Press, 1999.
Lua MLA (9ú heag.)Leon Alexis agus Leon Mathews. Database Management Systems. Leon Press, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.