Spyglass Numbers We Know. Compass Point Books.
Chicago-čujuhus (17. p.)Spyglass Numbers We Know. Compass Point Books.
MLA-čujuhus (9. p.)Spyglass Numbers We Know. Compass Point Books.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.