World Health Organization. (2007). Extremely low frequency fields (Primera edición.). Editorial World Health Organization.
Cita Chicago (17th ed.)World Health Organization. Extremely Low Frequency Fields. Primera edición. Geneva: Editorial World Health Organization, 2007.
Cita MLA (8th ed.)World Health Organization. Extremely Low Frequency Fields. Primera edición. Editorial World Health Organization, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.