(1986). Science experiments and projects.
Chicago-čujuhus (17. p.)Science Experiments and Projects. 1986.
MLA-čujuhus (9. p.)Science Experiments and Projects. 1986.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.
APA-čujuhus (7. p.)