Choi WS، Ahluwalia JS، Harris KJ، Okuyemi K (مايو 2002). "Progression to established smoking: the influence of tobacco marketing". American Journal of Preventive Medicine. ج. 22 ع. 4: 228–33. DOI:10.1016/S0749-3797(02)00420-8. PMID:11988378.
Choi WS، Ahluwalia JS، Harris KJ، Okuyemi K (مايو 2002). "Progression to established smoking: the influence of tobacco marketing". American Journal of Preventive Medicine. ج. 22 ع. 4: 228–33. DOI:10.1016/S0749-3797(02)00420-8. PMID:11988378.