Jenkins, D. S. (1946). The origin, distribution, and airphoto identification of United States soils. With special reference to airport and highway engineering, by D. S. Jenkins [and others]. U.S. Dept. of Commerce.
Cita Chicago (17th ed.)Jenkins, D S. The Origin, Distribution, and Airphoto Identification of United States Soils. With Special Reference to Airport and Highway Engineering, by D. S. Jenkins [and Others]. Washington: U.S. Dept. of Commerce, 1946.
Cita MLA (9th ed.)Jenkins, D S. The Origin, Distribution, and Airphoto Identification of United States Soils. With Special Reference to Airport and Highway Engineering, by D. S. Jenkins [and Others]. U.S. Dept. of Commerce, 1946.
Atenció: Aquestes cites poden no estar 100% correctes.