Cita APA (7th ed.)

Mclellan, D. (1973). Karl Marks His life and thought. Macmillan.

Cita Chicago (17th ed.)

Mclellan, David. Karl Marks His Life and Thought. London: Macmillan, 1973.

Cita MLA (9th ed.)

Mclellan, David. Karl Marks His Life and Thought. Macmillan, 1973.