Cita APA (7th ed.)

Tolle, E. (2005). The Power of Now: A Guide to Spiritual Enlightenment. New World Library.

Cita Chicago (17th ed.)

Tolle, Eckhart. The Power of Now: A Guide to Spiritual Enlightenment. Calif: New World Library, 2005.

Cita MLA (9th ed.)

Tolle, Eckhart. The Power of Now: A Guide to Spiritual Enlightenment. New World Library, 2005.