杜会琴. (2011). 20几岁懂了就不晚: You are not too late to know this. 龙门书局.
Dyfyniad Arddull Chicago杜会琴. 20几岁懂了就不晚: You Are Not Too Late to Know This. 龙门书局, 2011.
Dyfyniad MLA杜会琴. 20几岁懂了就不晚: You Are Not Too Late to Know This. 龙门书局, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.