Não informado. (1964). Soil and water. National Water and Soil Conservation Organization.
Style de citation Chicago (17e éd.)Não informado. Soil and Water. Wellington: National Water and Soil Conservation Organization, 1964.
Style de citation MLA (8e éd.)Não informado. Soil and Water. National Water and Soil Conservation Organization, 1964.
Attention : ces citations peuvent ne pas être correctes à 100%.