Ōkawa, R. (1990). The laws of gold: The wisdom of Buddha that inspires the new civilization. Institute for Research in Human Happiness.
Lua i Stíl Chicago (17ú heag.)Ōkawa, Ryūhō. The Laws of Gold: The Wisdom of Buddha That Inspires the New Civilization. Japan: Institute for Research in Human Happiness, 1990.
Lua MLA (9ú heag.)Ōkawa, Ryūhō. The Laws of Gold: The Wisdom of Buddha That Inspires the New Civilization. Institute for Research in Human Happiness, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.