杜会琴. (2011). 20几岁懂了就不晚: You are not too late to know this. 龙门书局.
Lua i Stíl Chicago (17ú heag.)杜会琴. 20几岁懂了就不晚: You Are Not Too Late to Know This. 龙门书局, 2011.
Lua MLA (8ú heag.)杜会琴. 20几岁懂了就不晚: You Are Not Too Late to Know This. 龙门书局, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.