APA (7th ed.) Citation

Liebknecht, W. P. C. M. L., & Untermann, E. (1901). Karl Marx: Biographical memoirs. Kerr.

Chicago Style (17th ed.) Citation

Liebknecht, Wilhelm Philipp Christian Martin Ludwig, and Ernest Untermann. Karl Marx: Biographical Memoirs. Chicago: Kerr, 1901.

MLA (9th ed.) Citation

Liebknecht, Wilhelm Philipp Christian Martin Ludwig, and Ernest Untermann. Karl Marx: Biographical Memoirs. Kerr, 1901.