Citazione Stile APA (7a Edizione)

Ellerman, D. (2000). The indirect approach. Office of the Senior Vice President and Chief Economist.

Citazione stile Chigago Style (17a edizione)

Ellerman, David. The Indirect Approach. Washington, D.C: Office of the Senior Vice President and Chief Economist, 2000.

Citatione MLA (9a ed.)

Ellerman, David. The Indirect Approach. Office of the Senior Vice President and Chief Economist, 2000.