Maule, H. E. The Boy's Book of New Inventions.
Chicago-čujuhus (17. p.)Maule, Harry E. The Boy's Book of New Inventions.
MLA-čujuhus (9. p.)Maule, Harry E. The Boy's Book of New Inventions.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.