Iqbal, Z., Qureshi, S. K., & Mahmood, R. (1998). The underground economy and tax evasion in Pakistan: A fresh assessment. Pakistan Inst. of Development Economics.
Chicago-Zitierstil (17. Ausg.)Iqbal, Zafar, Sarfraz Khan Qureshi, und Riaz Mahmood. The Underground Economy and Tax Evasion in Pakistan: A Fresh Assessment. Islamabad: Pakistan Inst. of Development Economics, 1998.
MLA-Zitierstil (9. Ausg.)Iqbal, Zafar, et al. The Underground Economy and Tax Evasion in Pakistan: A Fresh Assessment. Pakistan Inst. of Development Economics, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.