GROEBNER DAVID F. (1993). STUDY GUIDE TO ACCOMPANY BUSINESS STATISTICS - A DECISION MAKING APPROACH (4TH.). MACMILLAN.
Lua i Stíl Chicago (17ú heag.)GROEBNER DAVID F. STUDY GUIDE TO ACCOMPANY BUSINESS STATISTICS - A DECISION MAKING APPROACH. 4TH. NEW YORK: MACMILLAN, 1993.
Lua MLA (9ú heag.)GROEBNER DAVID F. STUDY GUIDE TO ACCOMPANY BUSINESS STATISTICS - A DECISION MAKING APPROACH. 4TH. MACMILLAN, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.