Chicago: Enrico Ferri, "Preface," Criminal Sociology, trans. Garnett, Constance Black, 1862-1946 in Criminal Sociology (London: Effingham Wilson, Royal Exchange, 1831), Original Sources, accessed August 9, 2022, http://www.originalsources.com/Document.aspx?DocID=3X37MSGDYAGQ4T1.
MLA: Ferri, Enrico. "Preface." Criminal Sociology, translted by Garnett, Constance Black, 1862-1946, in Criminal Sociology, London, Effingham Wilson, Royal Exchange, 1831, Original Sources. 9 Aug. 2022. http://www.originalsources.com/Document.aspx?DocID=3X37MSGDYAGQ4T1.
Harvard: Ferri, E, 'Preface' in Criminal Sociology, trans. . cited in 1831, Criminal Sociology, Effingham Wilson, Royal Exchange, London. Original Sources, retrieved 9 August 2022, from http://www.originalsources.com/Document.aspx?DocID=3X37MSGDYAGQ4T1.