APA-referens (7:e uppl.)

(2009). Calcium and Magnesium in Drinking-Water. s.n.

Chicago-referens (17:e uppl.)

Calcium and Magnesium in Drinking-Water. Washington, D.C: s.n, 2009.

MLA-referens (9:e uppl.)

Calcium and Magnesium in Drinking-Water. s.n, 2009.