Case, K. E. F. (2022). Principles of Economics (12th.). Noida.
Lua i Stíl Chicago (17ú heag.)Case, Karl E; Fair. Principles of Economics. 12th. Pearson India Education Services: Noida, 2022.
Lua MLA (9ú heag.)Case, Karl E; Fair. Principles of Economics. 12th. Noida, 2022.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.