Okawa, R. (1990). The laws of the sun: The revelation of Buddha that enlightens the new age. Institute for Research in Human Happiness.
Citazione stile Chigago Style (17a edizione)Okawa, Ryuho. The Laws of the Sun: The Revelation of Buddha That Enlightens the New Age. Tokyo: Institute for Research in Human Happiness, 1990.
Citatione MLA (9a ed.)Okawa, Ryuho. The Laws of the Sun: The Revelation of Buddha That Enlightens the New Age. Institute for Research in Human Happiness, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.