WHO. Programm Description: Concepts, Methods and Applications (1st edition.). WHO.
Cita Chicago (17th ed.)WHO. Programm Description: Concepts, Methods and Applications. 1st edition. New Delhi: WHO.
Cita MLA (9th ed.)WHO. Programm Description: Concepts, Methods and Applications. 1st edition. WHO.
Atenció: Aquestes cites poden no estar 100% correctes.