Siskind, C. S. (1952). Direct-current machinery. National Book Store].
Cita Chicago Style (17a ed.)Siskind, Charles Seymour. Direct-current Machinery. [Manila: National Book Store], 1952.
Cita MLA (9a ed.)Siskind, Charles Seymour. Direct-current Machinery. National Book Store], 1952.
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