Clark, J. R. (1982). Study Guide for Essentials of Economics. ELSEVIER.
Cita Chicago (17th ed.)Clark, J. R. Study Guide for Essentials of Economics. ELSEVIER, 1982.
Cita MLA (8th ed.)Clark, J. R. Study Guide for Essentials of Economics. ELSEVIER, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.