APA (7e ed.) Bronvermelding

Howell, W. G., & Brent, D. M. (2013). Thinking about the presidency: The primacy of power. Princeton University Press.

Chicago (17e ed.) Bronvermelding

Howell, William G., en David Milton Brent. Thinking About the Presidency: The Primacy of Power. Princeton: Princeton University Press, 2013.

MLA (9e ed.) Bronvermelding

Howell, William G., en David Milton Brent. Thinking About the Presidency: The Primacy of Power. Princeton University Press, 2013.