(EN) Charlotte Perkins Gilman, A Suggestion on the Negro Problem, in The American Journal of Sociology, vol. 14, University of Chicago Press, 1909. URL consultato il 2 marzo 2017 (archiviato dall'url originale il 30 novembre 2018).
(EN) Charlotte Perkins Gilman, The Yellow Wall-Paper and Other Stories, a cura di Robert Shulman, Oxford, Oxford University Press, 2009, pp. viii-ix, OCLC900930215.
(EN) Ann J. Lane, To Herland and Beyond: the Life and Work of Charlotte Perkins Gilman, New York, Pantheon Books, 1990, pp. 229-230, OCLC476966471.
(EN) Ann J. Lane, To Herland and Beyond: the Life and Work of Charlotte Perkins Gilman, New York, Pantheon Books, 1990, p. 299, OCLC476966471.
(EN) Cynthia Davis e Denise D. Knight, Charlotte Perkins Gilman and Her Contemporaries: Literary and Intellectual Contexts, Tuscaloosa, University of Alabama Press, 2011, p. 206, OCLC320324560.
(EN) Ann J. Lane, To Herland and Beyond : the Life and Work of Charlotte Perkins Gilman, New York, Pantheon Books, 1990, p. 109, OCLC476966471.
(EN) Catherine Golden e Joanna S. Zangrando, The Mixed Legacy of Charlotte Perkins Gilman, Newark, University of Delaware Press, 2000, p. 211, OCLC884667315.