Williams, C. C., & Schneider, F. (2016). Measuring the global shadow economy: The prevalence of informal work and labour. Edward Elgar Publishing.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিWilliams, Colin C., এবং Friedrich Schneider. Measuring the Global Shadow Economy: The Prevalence of Informal Work and Labour. Cheltenham, UK ; Northampton, MA, USA: Edward Elgar Publishing, 2016.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিWilliams, Colin C., এবং Friedrich Schneider. Measuring the Global Shadow Economy: The Prevalence of Informal Work and Labour. Edward Elgar Publishing, 2016.