Cita APA (7th ed.)

Guedalla, P. (1951). Mr. Churchill. A portrait. Pan Books.

Cita Chicago (17th ed.)

Guedalla, Philip. Mr. Churchill. A Portrait. Londres: Pan Books, 1951.

Cita MLA (9th ed.)

Guedalla, Philip. Mr. Churchill. A Portrait. Pan Books, 1951.