(1990). Selected annotated bibliography on essential drugs (1 ed.). World Health organization.
Citazione stile Chigago Style (17a edizione)Selected Annotated Bibliography on Essential Drugs. 1 ed. Washington: World Health organization, 1990.
Citatione MLA (9a ed.)Selected Annotated Bibliography on Essential Drugs. 1 ed. World Health organization, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.