APA (7th ed.) Citation
Kang, B., Gichuru, M., Hulugalle, N., & Swift, M. (1991). Soil constraints for sustainable upland crop production in humid and subhumid West Africa.
Chicago Style (17th ed.) Citation
Kang, B., M. Gichuru, N. Hulugalle, and M.J Swift. Soil Constraints for Sustainable Upland Crop Production in Humid and Subhumid West Africa. 1991.
MLA (9th ed.) Citation
Kang, B., et al. Soil Constraints for Sustainable Upland Crop Production in Humid and Subhumid West Africa. 1991.
Warning: These citations may not always be 100% accurate.