Cita APA (7th ed.)

Roosevelt, T. (1951). The letters of Theodore Roosevelt. Harvard University Press.

Cita Chicago (17th ed.)

Roosevelt, Theodore. The Letters of Theodore Roosevelt. Cambridge, Mass: Harvard University Press, 1951.

Cita MLA (9th ed.)

Roosevelt, Theodore. The Letters of Theodore Roosevelt. Harvard University Press, 1951.

Atenció: Aquestes cites poden no estar 100% correctes.