Chicago: James Lane Allen, "Preface," The Choir Invisible in The Choir Invisible Original Sources, accessed April 19, 2024, http://www.originalsources.com/Document.aspx?DocID=8I17ENDF9CPXHW1.
MLA: Allen, James Lane. "Preface." The Choir Invisible, in The Choir Invisible, Original Sources. 19 Apr. 2024. http://www.originalsources.com/Document.aspx?DocID=8I17ENDF9CPXHW1.
Harvard: Allen, JL, 'Preface' in The Choir Invisible. cited in , The Choir Invisible. Original Sources, retrieved 19 April 2024, from http://www.originalsources.com/Document.aspx?DocID=8I17ENDF9CPXHW1.