Williams, C. C., & Schneider, F. (2016). Measuring the global shadow economy: The prevalence of informal work and labour. Edward Elgar Publishing.
Citazione stile Chigago Style (17a edizione)Williams, Colin C., e Friedrich Schneider. Measuring the Global Shadow Economy: The Prevalence of Informal Work and Labour. Cheltenham, UK ; Northampton, MA, USA: Edward Elgar Publishing, 2016.
Citatione MLA (9a ed.)Williams, Colin C., e Friedrich Schneider. Measuring the Global Shadow Economy: The Prevalence of Informal Work and Labour. Edward Elgar Publishing, 2016.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.