APA (7th ed.) Citation

Hellman, C. I. (1956). Elements of radio (3rd edition.). Van Nostrand.

Chicago Style (17th ed.) Citation

Hellman, Charles I. Elements of Radio. 3rd edition. Princeton, N.J.: Van Nostrand, 1956.

MLA (9th ed.) Citation

Hellman, Charles I. Elements of Radio. 3rd edition. Van Nostrand, 1956.