World Health Organization. Regional Office for South-East Asia. (2010). Helping people quit tobacco: A manual for doctors and dentists. World Health Organization, Regional Office for South-East Asia.
Cita Chicago (17th ed.)World Health Organization. Regional Office for South-East Asia. Helping People Quit Tobacco: A Manual for Doctors and Dentists. New Delhi: World Health Organization, Regional Office for South-East Asia, 2010.
Cita MLA (8th ed.)World Health Organization. Regional Office for South-East Asia. Helping People Quit Tobacco: A Manual for Doctors and Dentists. World Health Organization, Regional Office for South-East Asia, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.