Tolong jelaskan mengenai Bacaan tambahan dari Kōfuku-no-Kagaku

Clarke, Peter B. (ed.) (1999), 'Kofuku-no-Kagaku: The Institute for Research in Human Happiness' in A Bibliography of Japanese New Religious Movements: With Annotations, Surrey, UK, Japan Library (Curzon), ISBN 1-873410-80-8, pp. 149–67

Yamashita, Akiko (1998), 'The "Eschatology" of Japanese new and new new religions: from Tenrikyo to Kofuku-no-Kagaku' in Japanese Religions, Vol. 23, January 1998, NCC, Kyoto, Japan, pp. 125–42

"The Transformation of a Recent Japanese New Religion: Okawa Ryuho and Kofuku no Kagaku" in Japanese Journal of Religious Studies 22, pp. 343-380