APA استشهاد

(2000). Effect of restrictions on smoking at home, at school, and in public places on teenage smoking: Cross sectional study. BMJ.

استشهاد بنمط شيكاغو

"Effect of Restrictions On Smoking At Home, At School, and in Public Places On Teenage Smoking: Cross Sectional Study." BMJ 2000.

MLA استشهاد

"Effect of Restrictions On Smoking At Home, At School, and in Public Places On Teenage Smoking: Cross Sectional Study." BMJ 2000.

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.