Harkin, A. M. (1997). Smoking, drinking and drug taking in the European region. WHO Regional Off. for Europe.
Chicago-Zitierstil (17. Ausg.)Harkin, Anna May. Smoking, Drinking and Drug Taking in the European Region. Copenhagen: WHO Regional Off. for Europe, 1997.
MLA-Zitierstil (9. Ausg.)Harkin, Anna May. Smoking, Drinking and Drug Taking in the European Region. WHO Regional Off. for Europe, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.