APA-referens

Legge, A., & Krupa. S.V. (1990). Acidic Deposition: Sulphur and Nitrogen Oxides. Lewis.

Chicago-stil citat

Legge, A.H, och Krupa. S.V. Acidic Deposition: Sulphur and Nitrogen Oxides. Michigan: Lewis, 1990.

MLA-referens

Legge, A.H, och Krupa. S.V. Acidic Deposition: Sulphur and Nitrogen Oxides. Lewis, 1990.