Mid-Canada Line (English Wikipedia)

McCamley 2013, p. 34. McCamley, Nick (2013). Cold War Secret Nuclear Bunkers: The Passive Defence of the Western World. Pen and Sword. ISBN 9781844155088.
Skolnik 2007, p. 38. Skolnik, Merrill (2007). "Fluttar DEW-Line Gap-Filler". In Willis, Nicholas; Griffiths, Hugh (eds.). Advances in Bistatic Radar. SciTech Publishing. pp. 35–46. ISBN 9781891121487.
Skolnik 2007, p. 45. Skolnik, Merrill (2007). "Fluttar DEW-Line Gap-Filler". In Willis, Nicholas; Griffiths, Hugh (eds.). Advances in Bistatic Radar. SciTech Publishing. pp. 35–46. ISBN 9781891121487.

campingcdn.blogspot.com

Thorne 1979. Thorne, D.H. (1979). "The Mid Canada Line, 1958 – 1965". {{cite magazine}}: Cite magazine requires |magazine= (help)