Lua APA (7ú heag.)

Lipsey, R. G., & Chrystal, K. A. (1999). Principles of economics (9th.ed.). Oxford Univ..

Lua i Stíl Chicago (17ú heag.)

Lipsey, Richard G., agus K. Alec Chrystal. Principles of Economics. 9th.ed. Oxford: Oxford Univ., 1999.

Lua MLA (9ú heag.)

Lipsey, Richard G., agus K. Alec Chrystal. Principles of Economics. 9th.ed. Oxford Univ., 1999.

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