“Fredrich Schneider and Dominik H. Enste. The Shadow Economy—An International Survey. New Delhi Thousand Oaks London: Sage Publications. 2006. Paperback. Indian Rs 550.00”. The Pakistan Development Review 46, no. 1 (December 24, 2022): pp.99–101. Accessed April 26, 2025. https://thepdr.pk/index.php/pdr/article/view/2172.