(2003). Soil fertility and fertilizer.: Samuel L. Tisdale.....[et al.] (5th ed.). Prentice hall.
Cita Chicago (17th ed.)Soil Fertility and Fertilizer.: Samuel L. Tisdale.....[et Al.]. 5th ed. New Delhi: Prentice hall, 2003.
Cita MLA (9th ed.)Soil Fertility and Fertilizer.: Samuel L. Tisdale.....[et Al.]. 5th ed. Prentice hall, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.