Não informado. (1968). Journal of the Soil Association. Soil Association.
Style de citation Chicago (17e éd.)Não informado. Journal of the Soil Association. London: Soil Association, 1968.
Style de citation MLA (8e éd.)Não informado. Journal of the Soil Association. Soil Association, 1968.
Attention : ces citations peuvent ne pas être correctes à 100%.