APA (7th ed.) Citation

Fraps, G. S., & Sterges, A. J. (1931). Estimation of nitric and nitrous nitrogen in soils. Texas Agricultural Experiment Station.

Chicago Style (17th ed.) Citation

Fraps, G. S., and A. J. Sterges. Estimation of Nitric and Nitrous Nitrogen in Soils. College Station, Tex.: Texas Agricultural Experiment Station, 1931.

MLA (9th ed.) Citation

Fraps, G. S., and A. J. Sterges. Estimation of Nitric and Nitrous Nitrogen in Soils. Texas Agricultural Experiment Station, 1931.