World Health Organization. (1987). Pharmaceutical Preparations. World Health Organization.
Citazione stile Chigago Style (17a edizione)World Health Organization. Pharmaceutical Preparations. Geneva: World Health Organization, 1987.
Citatione MLA (9a ed.)World Health Organization. Pharmaceutical Preparations. World Health Organization, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.