Colvin, I. (2013). Flight 777: The mystery of Leslie Howard / Ian Colvin. Pen & Sword.
Lua i Stíl Chicago (17ú heag.)Colvin, Ian. Flight 777: The Mystery of Leslie Howard / Ian Colvin. Barnsley: Pen & Sword, 2013.
Lua MLA (8ú heag.)Colvin, Ian. Flight 777: The Mystery of Leslie Howard / Ian Colvin. Pen & Sword, 2013.
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