Citazione Stile APA (7a Edizione)

(2012). Number activities for children with mathematical learning difficulties / Mel Lever. [electronic resource].

Citazione stile Chigago Style (17a edizione)

Number Activities for Children with Mathematical Learning Difficulties / Mel Lever. [electronic Resource]. 2012.

Citatione MLA (9a ed.)

Number Activities for Children with Mathematical Learning Difficulties / Mel Lever. [electronic Resource]. 2012.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.