APA (7th ed.) Citation

Sparks, D. L., & ScienceDirect (Online service). (1992). Advances in agronomy. Academic Press.

Chicago Style (17th ed.) Citation

Sparks, Donald L., and ScienceDirect (Online service). Advances in Agronomy. San Diego: Academic Press, 1992.

MLA (8th ed.) Citation

Sparks, Donald L., and ScienceDirect (Online service). Advances in Agronomy. Academic Press, 1992.

Warning: These citations may not always be 100% accurate.