Cita APA (7a ed.)

Percival, G. A. (1920). The electric lamp industry. Sir Isaac Pitman & Sons.

Cita Chicago Style (17a ed.)

Percival, G. Arncliffe. The Electric Lamp Industry. London [etc.]: Sir Isaac Pitman & Sons, 1920.

Cita MLA (9a ed.)

Percival, G. Arncliffe. The Electric Lamp Industry. Sir Isaac Pitman & Sons, 1920.