APA (7th ed.) Citation

(2011). Get on the air with HF digital: The beginner's guide to Psk31, Rtty and more! (1. ed.). ARRL.

Chicago Style (17th ed.) Citation

Get on the Air with HF Digital: The Beginner's Guide to Psk31, Rtty and More! 1. ed. Newington: ARRL, 2011.

MLA (9th ed.) Citation

Get on the Air with HF Digital: The Beginner's Guide to Psk31, Rtty and More! 1. ed. ARRL, 2011.

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