World Health Organization. (1997). Health imperatives for South - East Asia. World Health organization.
Cita Chicago (17th ed.)World Health Organization. Health Imperatives for South - East Asia. New Delhi: World Health organization, 1997.
Cita MLA (8th ed.)World Health Organization. Health Imperatives for South - East Asia. World Health organization, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.