Schwab, K. (2016). The fourth industrial revolution (1.ed.). protfolio penguin.
Chicago-čujuhus (17. p.)Schwab, Klaus. The Fourth Industrial Revolution. 1.ed. england: protfolio penguin, 2016.
MLA-čujuhus (9. p.)Schwab, Klaus. The Fourth Industrial Revolution. 1.ed. protfolio penguin, 2016.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.