Allan, G. Interactive Paper. SPIE Digital Library.
Chicago-čujuhus (17. p.)Allan, Graham. Interactive Paper. SPIE Digital Library.
MLA-čujuhus (9. p.)Allan, Graham. Interactive Paper. SPIE Digital Library.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.