Brodhage, H., & Hormuth, W. (1968). Planning and engineering of radio relay links (7th ed.). Siemens Aktiengesellschaft.
Lua i Stíl Chicago (17ú heag.)Brodhage, Helmut, agus Wilhelm Hormuth. Planning and Engineering of Radio Relay Links. 7th ed. [Berlin]: Siemens Aktiengesellschaft, 1968.
Lua MLA (8ú heag.)Brodhage, Helmut, agus Wilhelm Hormuth. Planning and Engineering of Radio Relay Links. 7th ed. Siemens Aktiengesellschaft, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.