APA (7th ed.) Citation

American Radio Relay League & Wilson, M. (2020). ARRL's extra Q & A: Upgrade to an extra class Ham radio licence! (Fifth edition.). American Radio Relay League.

Chicago Style (17th ed.) Citation

American Radio Relay League and Mark Wilson. ARRL's Extra Q & A: Upgrade to an Extra Class Ham Radio Licence! Fifth edition. Newington: American Radio Relay League, 2020.

MLA (9th ed.) Citation

American Radio Relay League and Mark Wilson. ARRL's Extra Q & A: Upgrade to an Extra Class Ham Radio Licence! Fifth edition. American Radio Relay League, 2020.