APA (7th ed.) Zitazioa

By editorial Hobbyist , e. . .. (1998). Practical timer projects. BPB Pub.

Chicago Style (17th ed.) Zitazioa

By editorial Hobbyist , electronics. Practical Timer Projects. New Delhi: BPB Pub, 1998.

MLA (9th ed.) Zitazioa

By editorial Hobbyist , electronics. Practical Timer Projects. BPB Pub, 1998.