Cita APA (7a ed.)

Gustafson, A. F. (1937). Conservation of the soil. New York, Estados Unidos : McGraw-Hill.

Cita Chicago Style (17a ed.)

Gustafson, A. F. Conservation of the Soil. New York, Estados Unidos : McGraw-Hill, 1937.

Cita MLA (8a ed.)

Gustafson, A. F. Conservation of the Soil. New York, Estados Unidos : McGraw-Hill, 1937.

Cita IICA/CATIE

Gustafson, A. F. 1937. Conservation of the soil. New York, Estados Unidos : McGraw-Hill.