Cita APA (7a ed.)

Keller, G. (1965). Franklin Delano Roosevelt. Egle.

Cita Chicago Style (17a ed.)

Keller, Gottfried. Franklin Delano Roosevelt. Gossau: Egle, 1965.

Cita MLA (9a ed.)

Keller, Gottfried. Franklin Delano Roosevelt. Egle, 1965.