Gaya APA

Vigna, P., Casey, M, J. (2016). The age of cryptocurrency: how bitcoin and the blockchain are challenging the global economic order (BI) . USA: Picador.

Gaya MLA

Vigna, Paul., Casey, Michael, J.. "The age of cryptocurrency: how bitcoin and the blockchain are challenging the global economic order (BI)". USA: Picador, 2016. Text.