Cita APA (7a ed.)

GEYL, P. (1949). Napoleon; for and against. Penguin.

Cita Chicago Style (17a ed.)

GEYL, Pieter. Napoleon; for and Against. Harmondsworth, Middlesex: Penguin, 1949.

Cita MLA (9a ed.)

GEYL, Pieter. Napoleon; for and Against. Penguin, 1949.