APA

Haveman R. H., Knopf K. A., .The market system: an introduction to microeconomics. New York: Wiley,c1981.

Chicago

Haveman Robert H, Knopf Kenyon A, .The market system: an introduction to microeconomics. New York: Wiley,c1981.

Harvard

Haveman R. H., Knopf K. A., .The market system: an introduction to microeconomics. New York: Wiley,c1981.

MLA

Haveman Robert H, Knopf Kenyon A, .New York: Wiley,c1981. .