Center for Civic Education. (2010). Project citizen (1. print.). Center for Civic Education.
Citazione stile Chigago Style (17a edizione)Center for Civic Education. Project Citizen. 1. print. Calabasas, CA: Center for Civic Education, 2010.
Citatione MLA (9a ed.)Center for Civic Education. Project Citizen. 1. print. Center for Civic Education, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.