“Who could've been Who? An alternate history of Doctor Who”. Den of Geek. London, England, UK: Dennis Publishing (24 April 2008). 9 January 2013閲覧。 “Eventually a suggestion by the wife of BBC drama head Bill Slater was followed up and the production team found the wild-eyed and naturally eccentric Tom Baker mixing cement on a building site.”
“Top 10 Doctor Who producers: Part Two”. Den of Geek. London, England, UK: Dennis Publishing (1 April 2010). 2013年1月9日閲覧。 “Letts found casting a new Doctor more difficult, however, until a tip-off from his boss Bill Slater. An unemployed actor, then working on a building site, called Tom Baker had written to Slater asking for work. In, arguably, one of the best decisions ever made on Doctor Who, Letts cast Tom Baker as the fourth Doctor.”
digitalspy.co.uk
Rawson-Jones, Ben (14 October 2009). “A tribute to 'Doctor Who' legend Barry Letts”. Digital Spy. New York City, New York, USA: Hearst Magazines UK. 9 January 2013閲覧。 “Having seen unknown hod-carrier Baker in The Golden Voyage Of Sinbad, Letts took the goggle-eyed aspiring actor away from the building site and into the Tardis in 1974.”
Blumberg, Arnold (13 August 2007). “Doctor Who: Robot DVD Review - IGN”. IGN Entertainment. San Francisco, California, USA: News Corporation. 13 January 2013閲覧。
Sladen, Elisabeth (2012). Doctor Who Stories: Elizabeth Sladen Part 1 (DVD). Vol. Doctor Who: Invasion of the Dinosaurs. London, England, UK: BBC Video. ISBN9780780684416. OCLC750279801。
