Citazione Stile APA (7a Edizione)

(2011). Data analysis & probability drill sheets / written by Tanya Cook and Chris Forest. [electronic resource].

Citazione stile Chigago Style (17a edizione)

Data Analysis & Probability Drill Sheets / Written by Tanya Cook and Chris Forest. [electronic Resource]. 2011.

Citatione MLA (9a ed.)

Data Analysis & Probability Drill Sheets / Written by Tanya Cook and Chris Forest. [electronic Resource]. 2011.