Não informado. (1956). Practical Power Farming. British Power Farming Club.
Style de citation Chicago (17e éd.)Não informado. Practical Power Farming. London: British Power Farming Club, 1956.
Style de citation MLA (8e éd.)Não informado. Practical Power Farming. British Power Farming Club, 1956.
Attention : ces citations peuvent ne pas être correctes à 100%.