HARRD, R. International Economics/ R.f. Harrd. Cambridge Univ. Press.
Lua i Stíl Chicago (17ú heag.)HARRD, R.F. International Economics/ R.f. Harrd. Cambridge Univ. Press.
Lua MLA (8ú heag.)HARRD, R.F. International Economics/ R.f. Harrd. Cambridge Univ. Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.