APA (7th ed.) Citation

Porto Rico Agricultural Experiment Station & Gile, P. L. (1914). Red clay soil of Porto Rico. U.S. GPO.

Chicago Style (17th ed.) Citation

Porto Rico Agricultural Experiment Station and P. L. Gile. Red Clay Soil of Porto Rico. Washington: U.S. GPO, 1914.

MLA (9th ed.) Citation

Porto Rico Agricultural Experiment Station and P. L. Gile. Red Clay Soil of Porto Rico. U.S. GPO, 1914.

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