Chicago:
Enrico Ferri, "Preface," Criminal Sociology, trans. Garnett, Constance Black, 1862-1946 in Criminal Sociology (London: Effingham Wilson, Royal Exchange, 1831), Original Sources, accessed July 10, 2025, 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. 10 Jul. 2025. 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 10 July 2025, from http://www.originalsources.com/Document.aspx?DocID=3X37MSGDYAGQ4T1.