APA (7th ed.) Citation

Fraps, G. S., & Asbury, S. E. (1920). Commercial fertilizers in 1919-20. Texas Agricultural Experiment Station.

Chicago Style (17th ed.) Citation

Fraps, G. S., and S. E. Asbury. Commercial Fertilizers in 1919-20. College Station, Tex.: Texas Agricultural Experiment Station, 1920.

MLA (9th ed.) Citation

Fraps, G. S., and S. E. Asbury. Commercial Fertilizers in 1919-20. Texas Agricultural Experiment Station, 1920.