Schneider, F., & Enste, D. (2002). Hiding in the shadows: The growth of the underground economy. International Monetary Fund.
Lua i Stíl Chicago (17ú heag.)Schneider, Friedrich, agus Dominik Enste. Hiding in the Shadows: The Growth of the Underground Economy. Washington, D.C: International Monetary Fund, 2002.
Lua MLA (9ú heag.)Schneider, Friedrich, agus Dominik Enste. Hiding in the Shadows: The Growth of the Underground Economy. International Monetary Fund, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.