Hooda, R. P. (1994). Statistics for Business and Economics (2nd ed.). Macmillan Publishers India Ltd.
Lua i Stíl Chicago (17ú heag.)Hooda, R P. Statistics for Business and Economics. 2nd ed. New Delhi: Macmillan Publishers India Ltd, 1994.
Lua MLA (9ú heag.)Hooda, R P. Statistics for Business and Economics. 2nd ed. Macmillan Publishers India Ltd, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.