Citazione Stile APA (7a Edizione)

Case, K. (2002). Principles of economics (6th.). Pearson Education.

Citazione stile Chigago Style (17a edizione)

Case, Karl. Principles of Economics. 6th. Delhi: Pearson Education, 2002.

Citatione MLA (9a ed.)

Case, Karl. Principles of Economics. 6th. Pearson Education, 2002.