Citazione Stile APA (7a Edizione)

HAVEMAN, R. H., & KNOPF. Kenyon A. (1981). The market system: An introduction to microeconomics.--Ed.4. John Wiley and Sons.

Citazione stile Chigago Style (17a edizione)

HAVEMAN, Robert H., e KNOPF. Kenyon A. The Market System: An Introduction to Microeconomics.--Ed.4. New York: John Wiley and Sons, 1981.

Citatione MLA (9a ed.)

HAVEMAN, Robert H., e KNOPF. Kenyon A. The Market System: An Introduction to Microeconomics.--Ed.4. John Wiley and Sons, 1981.