Tolle, E. (2005). The Power of Now: A Guide to Spiritual Enlightenment. New World Library.
芝加哥风格引文Tolle, Eckhart. The Power of Now: A Guide to Spiritual Enlightenment. Calif: New World Library, 2005.
MLA引文Tolle, Eckhart. The Power of Now: A Guide to Spiritual Enlightenment. New World Library, 2005.
警告：这些引文格式不一定是100％准确.