APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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