APA (7th ed.) Citation

Engel. (2007). Cold War at 30,000 feet: The Anglo-American fight for aviation supremacy. Harvard.

Chicago Style (17th ed.) Citation

Engel. Cold War at 30,000 Feet: The Anglo-American Fight for Aviation Supremacy. London: Harvard, 2007.

MLA (8th ed.) Citation

Engel. Cold War at 30,000 Feet: The Anglo-American Fight for Aviation Supremacy. Harvard, 2007.

Warning: These citations may not always be 100% accurate.