Ōkawa, R. (1990). The laws of gold: The wisdom of Buddha that inspires the new civilization. Institute for Research in Human Happiness.
Citazione stile Chigago Style (17a edizione)Ōkawa, Ryūhō. The Laws of Gold: The Wisdom of Buddha That Inspires the New Civilization. Japan: Institute for Research in Human Happiness, 1990.
Citatione MLA (9a ed.)Ōkawa, Ryūhō. The Laws of Gold: The Wisdom of Buddha That Inspires the New Civilization. Institute for Research in Human Happiness, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.