Tolle, E. (2005). The Power of Now: A Guide to Spiritual Enlightenment. New World Library.
Chicagoスタイル(17版)引用形式Tolle, Eckhart. The Power of Now: A Guide to Spiritual Enlightenment. Calif: New World Library, 2005.
MLA(9版)引用形式Tolle, Eckhart. The Power of Now: A Guide to Spiritual Enlightenment. New World Library, 2005.
警告: この引用は必ずしも正確ではありません.