Παραπομπή σε μορφή APA (7η εκδ.)

Williams, C. C., & Schneider, F. (2016). Measuring the global shadow economy: The prevalence of informal work and labour. Edward Elgar Publishing.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Williams, Colin C., και Friedrich Schneider. Measuring the Global Shadow Economy: The Prevalence of Informal Work and Labour. Cheltenham, UK ; Northampton, MA, USA: Edward Elgar Publishing, 2016.

Παραπομπή σε μορφή MLA (9th εκδ.)

Williams, Colin C., και Friedrich Schneider. Measuring the Global Shadow Economy: The Prevalence of Informal Work and Labour. Edward Elgar Publishing, 2016.