Citazione Stile APA (7a Edizione)

(2003). 50 states: Great supplemental activities to complement any social studies curriculum / by Shirley Pearson.

Citazione stile Chigago Style (17a edizione)

50 States: Great Supplemental Activities to Complement Any Social Studies Curriculum / by Shirley Pearson. 2003.

Citatione MLA (9a ed.)

50 States: Great Supplemental Activities to Complement Any Social Studies Curriculum / by Shirley Pearson. 2003.

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