- Author: Al Argueta
- Language: English
- Year: 1964
- Author: Johan Zwaan
- Language: English
- Year: 1891
- Author: Andrew Zacharakis Stephen Spinelli Jr. Jeffry A Timmons
- Language: English
- Year: 2011
- Author: Andrew Zacharakis Stephen Spinelli Jr. Jeffry A Timmons
- Language: English
- Year: 2011
- Author: Jessica K. A. Word Jessica E. Sowa
- Language: English
- Year: 2017
- Author: Lawrence M. Miller
- Language: English
- Year: 1989
- Author: ARRL Inc H. Ward Silver N0AX
- Language: English
- Year: 2018
- Author: Alan Harrison Remko Van Hoek Heather Skipworth
- Language: English
- Year: 2015
