Não informado. (1981). Advances in Data Base Theory. Plenum Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Advances in Data Base Theory. New York: Plenum Publishing, 1981.
Lua MLA (8ú heag.)Não informado. Advances in Data Base Theory. Plenum Publishing, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.