Não informado. (1909). Flight: Aircraft, spacecraft, missiles. Royal Aero Club of the United Kingdom.
Chicago-viite (17. p.)Não informado. Flight: Aircraft, Spacecraft, Missiles. London: Royal Aero Club of the United Kingdom, 1909.
MLA-viite (8. p.)Não informado. Flight: Aircraft, Spacecraft, Missiles. Royal Aero Club of the United Kingdom, 1909.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.