PUGEL THOMAS A. (2007). INTERNATIONAL ECONOMICS (13TH.). MCGRAW HILL IRWIN.
Lua i Stíl Chicago (17ú heag.)PUGEL THOMAS A. INTERNATIONAL ECONOMICS. 13TH. BOSTON: MCGRAW HILL IRWIN, 2007.
Lua MLA (9ú heag.)PUGEL THOMAS A. INTERNATIONAL ECONOMICS. 13TH. MCGRAW HILL IRWIN, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.