Cita APA (7a ed.)

Barrett, W. (1961). Irrational man: A study in existential philosophy. Heinemann.

Cita Chicago Style (17a ed.)

Barrett, William. Irrational Man: A Study in Existential Philosophy. London [etc.]: Heinemann, 1961.

Cita MLA (9a ed.)

Barrett, William. Irrational Man: A Study in Existential Philosophy. Heinemann, 1961.