James Alm, J. M. (2004). Taxing the Hard-to Tax: Lessons from Theory and Practice. ELSEVIER.
Lua i Stíl Chicago (17ú heag.)James Alm, Jorge Martinez-Vazquez. Taxing the Hard-to Tax: Lessons from Theory and Practice. ELSEVIER, 2004.
Lua MLA (8ú heag.)James Alm, Jorge Martinez-Vazquez. Taxing the Hard-to Tax: Lessons from Theory and Practice. ELSEVIER, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.