2006 Shortwave frequency guide : worldwide broadcast and utility radio stations / ed. Klingenfuss Publications
2009 Shortwave frequency guide : worldwide broadcast and utility radio stations / ed. Klingenfuss Publications
2015 Shortwave frequency guide : worldwide broadcast and utility radio stations / ed. Klingenfuss Publications
2018 Shortwave frequency guide : worldwide broadcast and utility radio stations / ed. Klingenfuss Publications