Williams, C. C., & Schneider, F. (2016). Measuring the global shadow economy: The prevalence of informal work and labour. Edward Elgar Publishing.
Chicago-viite (17. p.)Williams, Colin C., ja Friedrich Schneider. Measuring the Global Shadow Economy: The Prevalence of Informal Work and Labour. Cheltenham, UK ; Northampton, MA, USA: Edward Elgar Publishing, 2016.
MLA-viite (9. p.)Williams, Colin C., ja Friedrich Schneider. Measuring the Global Shadow Economy: The Prevalence of Informal Work and Labour. Edward Elgar Publishing, 2016.
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