Tohutoro APA (7th ed.)
Berlin, H. M. (1985). 555 timer applications sourcebook, with experiments. BPB Pub.
Tohutoru Kātū Chicago (17th ed.)
Berlin, Howard M. 555 Timer Applications Sourcebook, with Experiments. New Delhi: BPB Pub, 1985.
Tohutoro MLA (9th ed.)
Berlin, Howard M. 555 Timer Applications Sourcebook, with Experiments. BPB Pub, 1985.
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