Mengel, K., Kirkby, E. A., Kosegarten, H., & Appel, T. (2001). Principles of plant nutrition (5th Edition.). Kluwer Academic Publishers.
Cita Chicago (17th ed.)Mengel, Konrad, Ernest A. Kirkby, Harald Kosegarten, i Thomas Appel. Principles of Plant Nutrition. 5th Edition. Dordrecht, The Netherlands: Kluwer Academic Publishers, 2001.
Cita MLA (9th ed.)Mengel, Konrad, et al. Principles of Plant Nutrition. 5th Edition. Kluwer Academic Publishers, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.