APA (7th ed.) Citation

American Radio Relay League. (1974). How to become a radio amateur (29th ed.). American Radio Relay League.

Chicago Style (17th ed.) Citation

American Radio Relay League. How to Become a Radio Amateur. 29th ed. Newington, Conn.: American Radio Relay League, 1974.

MLA (9th ed.) Citation

American Radio Relay League. How to Become a Radio Amateur. 29th ed. American Radio Relay League, 1974.

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