Blaug, Mark (Junio de 2000). «"Henry George: rebel with a cause"». The European Journal of the History of Economic Thought.: 270–288. ISSN0967-2567. doi:10.1080/096725600361816.
Blaug, Mark (Junio de 2000). «"Henry George: rebel with a cause"». The European Journal of the History of Economic Thought.: 270–288. ISSN0967-2567. doi:10.1080/096725600361816.
«Monopoly’s Inventor: The Progressive Who Didn’t Pass ‘Go’». 13 de febrero de 2015. Consultado el 14 de febrero de 2015. «Elizabeth Magie was born in Macomb, Ill., in 1866 ... Her father, James Magie, was a newspaper publisher and an abolitionist who accompanied ...»
