By editorial Hobbyist , e. . .. (1998). Practical timer projects. BPB Pub.
Chicago-čujuhus (17. p.)By editorial Hobbyist , electronics. Practical Timer Projects. New Delhi: BPB Pub, 1998.
MLA-čujuhus (9. p.)By editorial Hobbyist , electronics. Practical Timer Projects. BPB Pub, 1998.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.