APA (7th ed.) Citation
Witt, C., Cassman, K. G., Ottow, J. C. G., & Biker, U. (1998). Soil microbial biomass and nitrogen supply in an irrigated lowland rice soil as affected by crop rotation and residue management. Springer.
Chicago Style (17th ed.) Citation
Witt, C., Kenneth G. Cassman, Johannes C. G. Ottow, and Ulrich Biker. Soil Microbial Biomass and Nitrogen Supply in an Irrigated Lowland Rice Soil as Affected by Crop Rotation and Residue Management. Springer, 1998.
MLA (9th ed.) Citation
Witt, C., et al. Soil Microbial Biomass and Nitrogen Supply in an Irrigated Lowland Rice Soil as Affected by Crop Rotation and Residue Management. Springer, 1998.
Warning: These citations may not always be 100% accurate.