Cita APA (7th ed.)

Keupp, M. M. (2021). Defense economics: An introduction. Springer.

Cita Chicago (17th ed.)

Keupp, Marcus Matthias. Defense Economics: An Introduction. Cham: Springer, 2021.

Cita MLA (9th ed.)

Keupp, Marcus Matthias. Defense Economics: An Introduction. Springer, 2021.