Helman, E. (1966). H. R. Polt, Jovellanos and his English sources. Economic, philosophical, and political writings. The American Philosophical Society, Philadelphia, 1964. (Transactions, New series, Vol. 54, Part 7). El Colegio de México.
Style de citation Chicago (17e éd.)Helman, Edith. H. R. Polt, Jovellanos and His English Sources. Economic, Philosophical, and Political Writings. The American Philosophical Society, Philadelphia, 1964. (Transactions, New Series, Vol. 54, Part 7). El Colegio de México, 1966.
Style de citation MLA (9e éd.)Helman, Edith. H. R. Polt, Jovellanos and His English Sources. Economic, Philosophical, and Political Writings. The American Philosophical Society, Philadelphia, 1964. (Transactions, New Series, Vol. 54, Part 7). El Colegio de México, 1966.