Gaya APA

Geissinger, E. (2016). Virtual Billions : The Genius, The Drug Lord, and the Ivy League Twins Behind the Rise of Bitcoin . New York: Prometheus Books.

Gaya MLA

Geissinger, Eric. "Virtual Billions : The Genius, The Drug Lord, and the Ivy League Twins Behind the Rise of Bitcoin". New York: Prometheus Books, 2016. Text.