Harbury, C. (1982). Workbook in Introductory Economics (Third Edition). ELSEVIER.
Dyfyniad Arddull ChicagoHarbury, Colin. Workbook in Introductory Economics (Third Edition). ELSEVIER, 1982.
Dyfyniad MLAHarbury, Colin. Workbook in Introductory Economics (Third Edition). ELSEVIER, 1982.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.