1. Etter, J. (2006) The internet and the industrial revolution in smoking cessation counselling Drug Alcohol Rev, 25, pp. 79 - 84.
2. Zhu, S and Melcer, T and Sun, J and Rosbrook, B and Pierce, J. (2000) Smoking cessation with and without assistance—a population based analysis Am J Prev Med, 18, pp. 305 - 311.
3. Carter, S and Borland, R and Chapman, S.(2001) Finding the strength to kill your best friend—smokers talk about smoking and quitting. Sydney : Australian Smoking Cessation Consortium and GlaxoSmithKline Consumer Healthcare.
4. Stead, L and Lancaster, T and Perera, R.(2002) Telephone counselling for smoking cessation (Cochrane Review). In The Cochrane Library. . Chichester : John Wiley & Sons, Ltd. Issue 2, 2004
5. Tomson, T and Helgason, A and Gilljam, H. (2004) Quitline in smoking cessation: a cost-effectiveness analysis Int J Technol Assess Health Care, 20, pp. 469 - 474.