(2018). Bridges!: With 25 Science Projects for Kids.
Chicago-čujuhus (17. p.)Bridges!: With 25 Science Projects for Kids. 2018.
MLA-čujuhus (9. p.)Bridges!: With 25 Science Projects for Kids. 2018.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.