Tolle, E. (2001). The power of now: A guide to spiritual enlightenment. Yogi Impression.
Chicagoスタイル(17版)引用形式Tolle, Eckhart. The Power of Now: A Guide to Spiritual Enlightenment. Mumbai: Yogi Impression, 2001.
MLA(9版)引用形式Tolle, Eckhart. The Power of Now: A Guide to Spiritual Enlightenment. Yogi Impression, 2001.
警告: この引用は必ずしも正確ではありません.