World Health Organization. (1996). Trace elements in human nutrition and health.
Citazione stile Chigago Style (17a edizione)World Health Organization. Trace Elements in Human Nutrition and Health. 1996.
Citatione MLA (8a ed.)World Health Organization. Trace Elements in Human Nutrition and Health. 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.