Cita APA (7th ed.)

Howell, W. G., & Pevehouse, J. C. (2007). While dangers gather: Congressional checks on presidential war powers. Princeton University Press.

Cita Chicago (17th ed.)

Howell, William G., i Jon C. Pevehouse. While Dangers Gather: Congressional Checks on Presidential War Powers. Princeton: Princeton University Press, 2007.

Cita MLA (9th ed.)

Howell, William G., i Jon C. Pevehouse. While Dangers Gather: Congressional Checks on Presidential War Powers. Princeton University Press, 2007.