APA (7th ed.) Citation

Mengel, K., & Kirkby, E. A. (1982). Principles of plant nutrition (3rd ed.). International Potash Institute.

Chicago Style (17th ed.) Citation

Mengel, Konrad, and Ernest A. Kirkby. Principles of Plant Nutrition. 3rd ed. Bern: International Potash Institute, 1982.

MLA (9th ed.) Citation

Mengel, Konrad, and Ernest A. Kirkby. Principles of Plant Nutrition. 3rd ed. International Potash Institute, 1982.