APA (7th ed.) Citation

Tolle, E. (2005). The power of now: A guide to spiritual enlightenment.

Chicago Style (17th ed.) Citation

Tolle, Eckhart. The Power of Now: A Guide to Spiritual Enlightenment. London, 2005.

MLA (9th ed.) Citation

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

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