APA (7th ed.) Citation

Dreyfus, H. L. (2009). The Roots of Existentialism. A companion to phenomenology and existentialism, 137-161.

Chicago Style (17th ed.) Citation

Dreyfus, Hubert L. "The Roots of Existentialism." A Companion to Phenomenology and Existentialism 2009: 137-161.

MLA (9th ed.) Citation

Dreyfus, Hubert L. "The Roots of Existentialism." A Companion to Phenomenology and Existentialism, 2009, pp. 137-161.

Warning: These citations may not always be 100% accurate.