Landsburg, S. E. (1999). Price theory and applications (4th ed.). Cincinnati, Ohio: South-Western College.
Trích dẫn kiểu ChicagoLandsburg, Steven E. Price Theory and Applications. 4th ed. Cincinnati, Ohio: South-Western College, 1999.
Deismireacht MLALandsburg, Steven E. Price Theory and Applications. 4th ed. Cincinnati, Ohio: South-Western College, 1999.
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