APA Style
Mengel, Konrad, Kirkby, Ernest A.. (1987).
Principles of Plant Nutrition .
Switzerland:
International Potash Institute.
Chicago Style
Mengel, Konrad, Kirkby, Ernest A..
Principles of Plant Nutrition.
Switzerland:
International Potash Institute,
1987.
Text.
MLA Style
Mengel, Konrad, Kirkby, Ernest A..
Principles of Plant Nutrition.
Switzerland:
International Potash Institute,
1987.
Text.
Turabian Style
Mengel, Konrad, Kirkby, Ernest A..
Principles of Plant Nutrition.
Switzerland:
International Potash Institute,
1987.
Print.