Dyfyniad APA

World Health Organization. (2007). Extremely low frequency fields (Primera edición.). Editorial World Health Organization.

Dyfyniad Arddull Chicago

World Health Organization. Extremely Low Frequency Fields. Primera edición. Geneva: Editorial World Health Organization, 2007.

Dyfyniad MLA

World Health Organization. Extremely Low Frequency Fields. Primera edición. Editorial World Health Organization, 2007.

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