Cita APA (7a ed.)

Barret, W., & Aiken, H. D. (1971). Philosophy in the twentieth century. Vol 3, Contemporary European thought. Harper & Row.

Cita Chicago Style (17a ed.)

Barret, William, y Henry D. Aiken. Philosophy in the Twentieth Century. Vol 3, Contemporary European Thought. New York: Harper & Row, 1971.

Cita MLA (9a ed.)

Barret, William, y Henry D. Aiken. Philosophy in the Twentieth Century. Vol 3, Contemporary European Thought. Harper & Row, 1971.