Allen, G. (2010). Biographies of working men. Project Gutenberg.
Cita Chicago Style (17a ed.)Allen, Grant. Biographies of Working Men. To be supplied: Project Gutenberg, 2010.
Cita MLA (8a ed.)Allen, Grant. Biographies of Working Men. Project Gutenberg, 2010.
Precaución: Estas citas no son 100% exactas.