Cita APA (7a ed.)

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.