Lua APA (7ú heag.)

A CBT PUBLICATION. (1999). THE STORY OF ELECTRICITY (REPRINTED.). A CBT PUBLICATION.

Lua i Stíl Chicago (17ú heag.)

A CBT PUBLICATION. THE STORY OF ELECTRICITY. REPRINTED. NEW DELHI: A CBT PUBLICATION, 1999.

Lua MLA (9ú heag.)

A CBT PUBLICATION. THE STORY OF ELECTRICITY. REPRINTED. A CBT PUBLICATION, 1999.

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