Cita APA (7th ed.)

Portis, A. M. (1978). Electromagnetic fields: Sources and media. John Wiley.

Cita Chicago (17th ed.)

Portis, Alan M. Electromagnetic Fields: Sources and Media. Nueva York: John Wiley, 1978.

Cita MLA (9th ed.)

Portis, Alan M. Electromagnetic Fields: Sources and Media. John Wiley, 1978.