Citazione Stile APA (7a Edizione)

Massing, G. I. (2009). Civics in practice: Principles of government and economics. Holt McDougal.

Citazione stile Chigago Style (17a edizione)

Massing, Gregory I. Civics in Practice: Principles of Government and Economics. Orlando, Florida: Holt McDougal, 2009.

Citatione MLA (9a ed.)

Massing, Gregory I. Civics in Practice: Principles of Government and Economics. Holt McDougal, 2009.