Duffy, P. (2000). The skilled compositor, 1850-1914: An aristocrat among working men. Aldershot: Ashgate.
Lua i Stíl Chicago (17ú heag.)Duffy, Patrick. The Skilled Compositor, 1850-1914: An Aristocrat Among Working Men. Aldershot: Ashgate, 2000.
Lua MLA (8ú heag.)Duffy, Patrick. The Skilled Compositor, 1850-1914: An Aristocrat Among Working Men. Aldershot: Ashgate, 2000.
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