Perfectimm Inc. (1999). Power quality: Commercial facility power protection. Perfectimm.
Cita Chicago Style (17a ed.)Perfectimm Inc. Power Quality: Commercial Facility Power Protection. [Montrial]: Perfectimm, 1999.
Cita MLA (8a ed.)Perfectimm Inc. Power Quality: Commercial Facility Power Protection. Perfectimm, 1999.
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