Style de citation APA (7e éd.)

United States. Soil Conservation Service. Erosion in Washington: Causes and effects. s.n..

Style de citation Chicago (17e éd.)

United States. Soil Conservation Service. Erosion in Washington: Causes and Effects. [United States: s.n..

Style de citation MLA (8e éd.)

United States. Soil Conservation Service. Erosion in Washington: Causes and Effects. s.n..

Attention : ces citations peuvent ne pas être correctes à 100%.