World Health Organization. (1996). Trace elements in human nutrition and health.
Lua i Stíl Chicago (17ú heag.)World Health Organization. Trace Elements in Human Nutrition and Health. 1996.
Lua MLA (8ú heag.)World Health Organization. Trace Elements in Human Nutrition and Health. 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.