Cita APA (7th ed.)

Langlois-Berthelot, R., & Clarke, H. M. (1953). Electro-magnetic machines. Macdonald.

Cita Chicago (17th ed.)

Langlois-Berthelot, Richard, i Hugh Major Clarke. Electro-magnetic Machines. Lond.: Macdonald, 1953.

Cita MLA (8th ed.)

Langlois-Berthelot, Richard, i Hugh Major Clarke. Electro-magnetic Machines. Macdonald, 1953.