APA (7th ed.) Citation

Mengel, K., & Kirkby, E. A. (1979). Principles of plant nutrition (2. ed.). Internat. Potash Inst.

Chicago Style (17th ed.) Citation

Mengel, Konrad, and Ernest A. Kirkby. Principles of Plant Nutrition. 2. ed. Worblaufen-Bern: Internat. Potash Inst, 1979.

MLA (9th ed.) Citation

Mengel, Konrad, and Ernest A. Kirkby. Principles of Plant Nutrition. 2. ed. Internat. Potash Inst, 1979.