APA (7th ed.) Citation

Ullrich, W. R. (1990). Inorganic nitrogen in plants and microorganisms: Uptake and metabolism. Springer-Verlag.

Chicago Style (17th ed.) Citation

Ullrich, W. R. Inorganic Nitrogen in Plants and Microorganisms: Uptake and Metabolism. Berlin ; New York: Springer-Verlag, 1990.

MLA (9th ed.) Citation

Ullrich, W. R. Inorganic Nitrogen in Plants and Microorganisms: Uptake and Metabolism. Springer-Verlag, 1990.