Cita APA (7a ed.)

Walker, W. O., III. (2009). National security and core values in American history. Cambridge University Press.

Cita Chicago Style (17a ed.)

Walker, William O., III. National Security and Core Values in American History. Cambridge ; New York: Cambridge University Press, 2009.

Cita MLA (8a ed.)

Walker, William O., III. National Security and Core Values in American History. Cambridge University Press, 2009.