Dicks, T. (1975). Doctor Who: The three doctors (1a. ed.). Target Book.
Lua i Stíl Chicago (17ú heag.)Dicks, Terrance. Doctor Who: The Three Doctors. 1a. ed. Londres: Target Book, 1975.
Lua MLA (9ú heag.)Dicks, Terrance. Doctor Who: The Three Doctors. 1a. ed. Target Book, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.