P. Finkelman, p. 518, 2009. (EN) Paul Finkelman, The Crisis, in Encyclopedia of African American History, 1896 to the Present: From the Age of Segregation to the Twenty-First Century, Oxford University Press, 2009, pp. 515–518, ISBN9780195167795.
P. Finkelman, p. 516, 2009. (EN) Paul Finkelman, The Crisis, in Encyclopedia of African American History, 1896 to the Present: From the Age of Segregation to the Twenty-First Century, Oxford University Press, 2009, pp. 515–518, ISBN9780195167795.
P. Finkelman, p. 515, 2009. (EN) Paul Finkelman, The Crisis, in Encyclopedia of African American History, 1896 to the Present: From the Age of Segregation to the Twenty-First Century, Oxford University Press, 2009, pp. 515–518, ISBN9780195167795.
P. Finkelman, p. 517, 2009. (EN) Paul Finkelman, The Crisis, in Encyclopedia of African American History, 1896 to the Present: From the Age of Segregation to the Twenty-First Century, Oxford University Press, 2009, pp. 515–518, ISBN9780195167795.
P. Finkelman, pp. 517-518, 2009. (EN) Paul Finkelman, The Crisis, in Encyclopedia of African American History, 1896 to the Present: From the Age of Segregation to the Twenty-First Century, Oxford University Press, 2009, pp. 515–518, ISBN9780195167795.
(EN) Quintard Taylor, From Timbuktu to Katrina: Sources in African-American History, vol. 2, Cengage Learning, 2007, p. 11, ISBN9780495092780. Accessibile tramite Google.books. URL consultato il 7 marzo 2014.
(EN) About The Crisis: Overview, su thecrisismagazine.com, The Crisis. URL consultato il 7 marzo 2014 (archiviato dall'url originale l'8 marzo 2014).
(EN) The Crisis, primo numero, su myloc.gov, Reso disponibile on-line dalla Biblioteca del Congresso degli Stati Uniti. URL consultato il 13 novembre 2011 (archiviato dall'url originale il 6 aprile 2012).
