Dyfyniad APA

Harbury, C. (1982). Workbook in Introductory Economics (Third Edition). ELSEVIER.

Dyfyniad Arddull Chicago

Harbury, Colin. Workbook in Introductory Economics (Third Edition). ELSEVIER, 1982.

Dyfyniad MLA

Harbury, Colin. Workbook in Introductory Economics (Third Edition). ELSEVIER, 1982.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.