Berlin, H. M. (1976). 555 timer applications sourcebook, with experiments.
Cita Chicago Style (17a ed.)Berlin, Howard M. 555 Timer Applications Sourcebook, with Experiments. Indianapolis : H. W. Sams, 1976.
Cita MLA (9a ed.)Berlin, Howard M. 555 Timer Applications Sourcebook, with Experiments. 1976.
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