Wallach, J. (2012). The richest woman in america: Hetty green in the gilded age.
Cita Chicago Style (17a ed.)Wallach, Janet. The Richest Woman in America: Hetty Green in the Gilded Age. 2012.
Cita MLA (8a ed.)Wallach, Janet. The Richest Woman in America: Hetty Green in the Gilded Age. 2012.
Precaución: Estas citas no son 100% exactas.