APA (7th ed.) Citation

Hellman, C. I. (1956). Elements of radio. D Van Nostrand.

Chicago Style (17th ed.) Citation

Hellman, Charles I. Elements of Radio. D Van Nostrand, 1956.

MLA (8th ed.) Citation

Hellman, Charles I. Elements of Radio. D Van Nostrand, 1956.

Warning: These citations may not always be 100% accurate.