Hooda R .P. (1994). Statistics for Business & Economics. Macmillan.
Lua i Stíl Chicago (17ú heag.)Hooda R .P. Statistics for Business & Economics. New Delhi: Macmillan, 1994.
Lua MLA (9ú heag.)Hooda R .P. Statistics for Business & Economics. Macmillan, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.