杜会琴. (2011). 20几岁懂了就不晚: You are not too late to know this. 龙门书局.
Chicagoスタイル(17版)引用形式杜会琴. 20几岁懂了就不晚: You Are Not Too Late to Know This. 龙门书局, 2011.
MLA(8版)引用形式杜会琴. 20几岁懂了就不晚: You Are Not Too Late to Know This. 龙门书局, 2011.
警告: この引用は必ずしも正確ではありません.
APA(7版)引用形式