Chrisholm, R. (1978). Principles of economics. Scott, Froeman and co..
Lua i Stíl Chicago (17ú heag.)Chrisholm, Roger. Principles of Economics. London: Scott, Froeman and co., 1978.
Lua MLA (9ú heag.)Chrisholm, Roger. Principles of Economics. Scott, Froeman and co., 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.