Cita APA (7th ed.)

Max, K. (1973). the revolutions of 1848. Penguin books.

Cita Chicago (17th ed.)

Max, Karl. The Revolutions of 1848. U.S.A: Penguin books, 1973.

Cita MLA (9th ed.)

Max, Karl. The Revolutions of 1848. Penguin books, 1973.