Cita APA (7a ed.)

杜会琴. (2011). 20几岁懂了就不晚: You are not too late to know this. 龙门书局.

Cita Chicago Style (17a ed.)

杜会琴. 20几岁懂了就不晚: You Are Not Too Late to Know This. 龙门书局, 2011.

Cita MLA (8a ed.)

杜会琴. 20几岁懂了就不晚: You Are Not Too Late to Know This. 龙门书局, 2011.