APA (7th ed.) Citation

Courtwright, D. T. (2005). Sky as frontier: Adventure, aviation, and empire. Texas A&M University Press.

Chicago Style (17th ed.) Citation

Courtwright, David T. Sky as Frontier: Adventure, Aviation, and Empire. College Station: Texas A&M University Press, 2005.

MLA (9th ed.) Citation

Courtwright, David T. Sky as Frontier: Adventure, Aviation, and Empire. Texas A&M University Press, 2005.