World Health Organization. (2001). Concise International chemical Assessment Document; Barium and Barium Compounds. IOMS.
Citazione stile Chigago Style (17a edizione)World Health Organization. Concise International Chemical Assessment Document; Barium and Barium Compounds. Ginebra: IOMS, 2001.
Citatione MLA (9a ed.)World Health Organization. Concise International Chemical Assessment Document; Barium and Barium Compounds. IOMS, 2001.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.