APA (7th ed.) Citation
Gichuru, M., & Sanchez, P. (1988). Phosphate rock fertilization in tilled and no-till low-input systems in the humid tropics.
Chicago Style (17th ed.) Citation
Gichuru, M.P, and P.A Sanchez. Phosphate Rock Fertilization in Tilled and No-till Low-input Systems in the Humid Tropics. 1988.
MLA (9th ed.) Citation
Gichuru, M.P, and P.A Sanchez. Phosphate Rock Fertilization in Tilled and No-till Low-input Systems in the Humid Tropics. 1988.
Warning: These citations may not always be 100% accurate.