Citazione Stile APA (7a Edizione)

Willis, J. F. 1., & Fabritius,M.Manfred. (2005). Explorations in macroeconomics (7th ed.). CAT Publishing Co.

Citazione stile Chigago Style (17a edizione)

Willis, James Frederick 1932, e Fabritius,M.Manfred. Explorations in Macroeconomics. 7th ed. Redding, Calif.: CAT Publishing Co, 2005.

Citatione MLA (8a ed.)

Willis, James Frederick 1932, e Fabritius,M.Manfred. Explorations in Macroeconomics. 7th ed. CAT Publishing Co, 2005.