Citazione APA

Hellman, C. I. (1956). Elements of radio (3rd ed.). Van Nostrand Affilated East West Press.

Stile di citazione Chicago

Hellman, Charles I. Elements of Radio. 3rd ed. Princeton, N.J., New Delhi: Van Nostrand Affilated East West Press, 1956.

Citazione MLA

Hellman, Charles I. Elements of Radio. 3rd ed. Van Nostrand Affilated East West Press, 1956.