Grant, A. (2021). Think Again. Penguin.
Chicago-čujuhus (17. p.)Grant, Adam. Think Again. Penguin, 2021.
MLA-čujuhus (9. p.)Grant, Adam. Think Again. Penguin, 2021.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.
APA-čujuhus (7. p.)