World Health Organization. (2007). Extremely low frequency fields (Primera edición.). Editorial World Health Organization.
Chicago Style (17th ed.) CitationWorld Health Organization. Extremely Low Frequency Fields. Primera edición. Geneva: Editorial World Health Organization, 2007.
ציטוט MLAWorld Health Organization. Extremely Low Frequency Fields. Primera edición. Editorial World Health Organization, 2007.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.