Choo, Y. B., & Kohl, P. (2011). You never step in the same river twice.
Chicago Style CitationChoo, Yan Bing., and Paul Kohl. You Never Step in the Same River Twice. 2011.
MLA引文Choo, Yan Bing., and Paul Kohl. You Never Step in the Same River Twice. 2011.
警告：這些引文格式不一定是100％准確.