APA-čujuhus (7. p.)
National Academies Press (U.S.) & ebrary, Inc. (2006). Learning to think spatially. National Academies Press.
Chicago-čujuhus (17. p.)
National Academies Press (U.S.) juo Inc ebrary. Learning to Think Spatially. Washington, D.C.: National Academies Press, 2006.
MLA-čujuhus (9. p.)
National Academies Press (U.S.) juo Inc ebrary. Learning to Think Spatially. National Academies Press, 2006.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.