Elffers, H. (1991). Income tax evasion: Theory and measurement. Kluwer.
Lua i Stíl Chicago (17ú heag.)Elffers, H. Income Tax Evasion: Theory and Measurement. Deventer: Kluwer, 1991.
Lua MLA (8ú heag.)Elffers, H. Income Tax Evasion: Theory and Measurement. Kluwer, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.