BILAS, R. A. (1971). Problems in microeconomics. McGraw-Hill.
Cita Chicago (17th ed.)BILAS, Richard A. Problems in Microeconomics. New York: McGraw-Hill, 1971.
Cita MLA (9th ed.)BILAS, Richard A. Problems in Microeconomics. McGraw-Hill, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.