Ōkawa, R. (2003). An unshakable mind: How to overcome life?s difficulties. Lantern Books.
Chicagoスタイル(17版)引用形式Ōkawa, Ryūhō. An Unshakable Mind: How to Overcome Life?s Difficulties. New York: Lantern Books, 2003.
MLA(9版)引用形式Ōkawa, Ryūhō. An Unshakable Mind: How to Overcome Life?s Difficulties. Lantern Books, 2003.
警告: この引用は必ずしも正確ではありません.