APA (7th ed.) Citation

Fraps, G. S. (1924). The effect of cropping upon the active potash of the soil. Texas Agricultural Experiment Station.

Chicago Style (17th ed.) Citation

Fraps, G. S. The Effect of Cropping upon the Active Potash of the Soil. College Station, Tex.: Texas Agricultural Experiment Station, 1924.

MLA (9th ed.) Citation

Fraps, G. S. The Effect of Cropping upon the Active Potash of the Soil. Texas Agricultural Experiment Station, 1924.