Verna, A. Business Statistics.
Lua i Stíl Chicago (17ú heag.)Verna, A.P. Business Statistics.
Lua MLA (9ú heag.)Verna, A.P. Business Statistics.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)