执云 & 刘素琴. (2009). 分享让你更快乐: Being more happy to share. 光明日报出版社.
Chicago Style (17th ed.) Citation执云 i 刘素琴. 分享让你更快乐: Being More Happy to Share. 光明日报出版社, 2009.
Cita MLA执云 i 刘素琴. 分享让你更快乐: Being More Happy to Share. 光明日报出版社, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.