APA-Zitierstil (7. Ausg.)

Gardner, C. M. K., Laryea, K. B., & Unger, P. W. (1999). Soil physical constraints to plant growth and crop production. Land and Water Development Division, Food and Agriculture Organization.

Chicago-Zitierstil (17. Ausg.)

Gardner, Catriona M. K., K. B. Laryea, und Paul W. Unger. Soil Physical Constraints to Plant Growth and Crop Production. Rome: Land and Water Development Division, Food and Agriculture Organization, 1999.

MLA-Zitierstil (9. Ausg.)

Gardner, Catriona M. K., et al. Soil Physical Constraints to Plant Growth and Crop Production. Land and Water Development Division, Food and Agriculture Organization, 1999.