Chicago: G. K. Chesterton, "Preface," Orthodoxy Original Sources, accessed April 20, 2024, http://www.originalsources.com/Document.aspx?DocID=TGPRJH5WQ1HZ8S8.
MLA: Chesterton, G. K. "Preface." Orthodoxy, Original Sources. 20 Apr. 2024. http://www.originalsources.com/Document.aspx?DocID=TGPRJH5WQ1HZ8S8.
Harvard: Chesterton, GK, 'Preface' in Orthodoxy. Original Sources, retrieved 20 April 2024, from http://www.originalsources.com/Document.aspx?DocID=TGPRJH5WQ1HZ8S8.