Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (8ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.