Columbia subject headings:
Smoking--United States--Psychological aspects.
Tobacco--Physiological effect--United States.
Youth--Tobacco use--United States.
Harvard subject headings:
Nicotine addiction
Nicotine addiction--Psychological aspects.
Smoking
Smoking--Psychological aspects
Princeton subject headings:
Smoking--United States--Physiological effect.
Smoking--United States--Psychological aspects.
Youth--Tobacco use--United States.