Ritsema, R. (1990). Chou yi: The oracle of encompassing versatility. Eranos Foundation.
Chicago Style (17th ed.) CitationRitsema, Rudolf. Chou Yi: The Oracle of Encompassing Versatility. Ascona: Eranos Foundation, 1990.
MLA (8th ed.) CitationRitsema, Rudolf. Chou Yi: The Oracle of Encompassing Versatility. Eranos Foundation, 1990.
Warning: These citations may not always be 100% accurate.