APA-referens

Brown, S. B. (1972). Realm of science ( 21 Vols.): :vol.16 the substance of our world: earth ,water and air. Touchstone.

Chicago-stil citat

Brown, Stanley. B. Realm of Science ( 21 Vols.): :vol.16 the Substance of Our World: Earth ,water and Air. USA: Touchstone, 1972.

MLA-referens

Brown, Stanley. B. Realm of Science ( 21 Vols.): :vol.16 the Substance of Our World: Earth ,water and Air. Touchstone, 1972.