Haseltine. Every Second Counts. Brookings Institution Press.
Chicago-čujuhus (17. p.)Haseltine. Every Second Counts. Brookings Institution Press.
MLA-čujuhus (9. p.)Haseltine. Every Second Counts. Brookings Institution Press.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.