Citazione Stile APA (7a Edizione)
Krugman, P., & Wells, R. (2018). Economics (5th Edition Revised and Enhanced Throughout.). macmillan education.
Citazione stile Chigago Style (17a edizione)
Krugman, Paul, e Robin Wells. Economics. 5th Edition Revised and Enhanced Throughout. New York: macmillan education, 2018.
Citatione MLA (9a ed.)
Krugman, Paul, e Robin Wells. Economics. 5th Edition Revised and Enhanced Throughout. macmillan education, 2018.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.