Harvard Business Review Press. (2019). Blockchain. Harvard Business Review Press.
Chicago-referens (17:e uppl.)Harvard Business Review Press. Blockchain. Boston, Massachesutts: Harvard Business Review Press, 2019.
MLA-referens (9:e uppl.)Harvard Business Review Press. Blockchain. Harvard Business Review Press, 2019.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.