Dyson, F. Imagined worlds. Harvard University Press.
Chicago-čujuhus (17. p.)Dyson, Freeman. Imagined Worlds. New York: Harvard University Press.
MLA-čujuhus (9. p.)Dyson, Freeman. Imagined Worlds. Harvard University Press.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.