APA (7th ed.) Citation

Keulen, H. v., & Heemst, H. v. (1982). Crop response to the supply of macronutrients. Centre for Agricultural Publishing and Documentation.

Chicago Style (17th ed.) Citation

Keulen, H. van, and H.D.J. van Heemst. Crop Response to the Supply of Macronutrients. Wageningen: Centre for Agricultural Publishing and Documentation, 1982.

MLA (9th ed.) Citation

Keulen, H. van, and H.D.J. van Heemst. Crop Response to the Supply of Macronutrients. Centre for Agricultural Publishing and Documentation, 1982.