Jackson, Tom; Evanchik, Monica; et al. The Wealthiest Americans Ever. The New York Times. 2007-07-15 [2007-07-15]. (原始内容存档于2018-01-05). 引文格式1维护:显式使用等标签 (link)
Jackson, Tom; Evanchik, Monica; et al. The Wealthiest Americans Ever. The New York Times. 2007-07-15 [2007-07-15]. (原始内容存档于2018-01-05). 引文格式1维护:显式使用等标签 (link)