Cita APA (7a ed.)

Martel, G. (2017). The month that changed the world: July 1914 and WWI. Oxford University Press.

Cita Chicago Style (17a ed.)

Martel, Gordon. The Month That Changed the World: July 1914 and WWI. Oxford: Oxford University Press, 2017.

Cita MLA (9a ed.)

Martel, Gordon. The Month That Changed the World: July 1914 and WWI. Oxford University Press, 2017.