« Hof-Atelier Elvira (München) », sur Deutschen Nationalbibliothek (in German)., Leipzig and Frankfurt am Main, Katalog der Deutschen Nationalbibliothek (consulté le ).
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Marti M. Lybeck, Desiring Emancipation: New Women and Homosexuality in Germany, 1890-1933, State University of New York Press, 300 p. (ISBN978-1-438-45222-7, lire en ligne), chap. 2 (« Experiments in Female Masculinity. Sophia Goudstikker's Masculine Mimicry in Turn-of-the-century Munich »), p. 51-77
Andrea Mantell Seidel, Isadora Duncan in the 21st Century : Capturing the Art and Spirit of the Dancer's Legacy, McFarland & Company, , 272 p. (ISBN978-0-7864-7795-1, lire en ligne), p. 153
Ralph Freedman, Life of a Poet: Rainer Maria Rilke, Evanston, Northwestern University Press, , 676 p. (ISBN978-0-8101-1543-9, lire en ligne), p. 57
Beth Muellner, « The Photographic Enactment of the Early New Woman in 1890s German Women's Bicycling Magazines », Women in German Yearbook : Feminist Studies in German Literature & Culture, University of Nebraska Press, vol. 22, , p. 167-188 (lire en ligne)