Cita APA (7th ed.)

(1990). Selected annotated bibliography on essential drugs (1 ed.). World Health organization.

Cita Chicago (17th ed.)

Selected Annotated Bibliography on Essential Drugs. 1 ed. Washington: World Health organization, 1990.

Cita MLA (9th ed.)

Selected Annotated Bibliography on Essential Drugs. 1 ed. World Health organization, 1990.