Verchère, A. (2010). Normes, taxes et pollution diffuse aux nitrates.
Cita Chicago (17th ed.)Verchère, Alban. Normes, Taxes Et Pollution Diffuse Aux Nitrates. 2010.
Cita MLA (8th ed.)Verchère, Alban. Normes, Taxes Et Pollution Diffuse Aux Nitrates. 2010.
Atenció: Aquestes cites poden no estar 100% correctes.