Gaya APA

Vigna, P., Casey, M. (2015). age of cryptocurrency: how bitcoin and digital money are challenging the global economic order (First edition.). nyu: picador paperback.

Gaya MLA

Vigna, Paul.., Casey, Michael,. "age of cryptocurrency: how bitcoin and digital money are challenging the global economic order". First edition. nyu: picador paperback, 2015. print.