Kennedy, I. (1992). Acid soil and acid rain. (2nd ed.). Research Studies Pr..
Cita Chicago (17th ed.)Kennedy, I.R. Acid Soil and Acid Rain. 2nd ed. Taunton: Research Studies Pr., 1992.
Cita MLA (9th ed.)Kennedy, I.R. Acid Soil and Acid Rain. 2nd ed. Research Studies Pr., 1992.
Atenció: Aquestes cites poden no estar 100% correctes.