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.
Cita Chicago Style (17a ed.)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.
Cita MLA (9a ed.)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.