Cita APA (7a ed.)
Addams, J., Commager, H. S., & Hamilton, N. Twenty Years at Hull-House. Signet.
Cita estilo Chicago (17a ed.)
Addams, Jane, Henry Steele Commager, y Nora Hamilton. Twenty Years at Hull-House. Nueva York, EUA: Signet.
Cita MLA (9a ed.)
Addams, Jane, et al. Twenty Years at Hull-House. Signet.
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