APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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