Hellman, C. I. (1956). Elements of radio (3rd ed.). Van Nostrand Affilated East West Press.
Chicago Edition CitationHellman, Charles I. Elements of Radio. 3rd ed. Princeton, N.J., New Delhi: Van Nostrand Affilated East West Press, 1956.
Deismireacht MLAHellman, Charles I. Elements of Radio. 3rd ed. Van Nostrand Affilated East West Press, 1956.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.