Franks, N. L. R., & Guest, R. (1997). Above the war fronts: The British two-seater bomber pilot and observer aces, the British two-seater fighter observer aces, and the Belgian, Italian, Austro-Hungarian and Russian fighter aces 1914 - 1918. Street.
Chicago Style (17th ed.) CitationFranks, Norman L. R., and Russell Guest. Above the War Fronts: The British Two-seater Bomber Pilot and Observer Aces, the British Two-seater Fighter Observer Aces, and the Belgian, Italian, Austro-Hungarian and Russian Fighter Aces 1914 - 1918. London [u.a.]: Street, 1997.
MLA (9th ed.) CitationFranks, Norman L. R., and Russell Guest. Above the War Fronts: The British Two-seater Bomber Pilot and Observer Aces, the British Two-seater Fighter Observer Aces, and the Belgian, Italian, Austro-Hungarian and Russian Fighter Aces 1914 - 1918. Street, 1997.