Chicago: Edna St. Vincent Millay, "Lament," Second April, ed. Callaway, Morgan, Jr., 1962- in Second April (New York: George E. Wood, 1850), Original Sources, accessed April 23, 2018, http://www.originalsources.com/Document.aspx?DocID=CNTZ26D1SLKI7JH.
MLA: Millay, Edna St. Vincent. "Lament." Second April, edited by Callaway, Morgan, Jr., 1962-, in Second April, New York, George E. Wood, 1850, Original Sources. 23 Apr. 2018. www.originalsources.com/Document.aspx?DocID=CNTZ26D1SLKI7JH.
Harvard: Millay, ES, 'Lament' in Second April, ed. . cited in 1850, Second April, George E. Wood, New York. Original Sources, retrieved 23 April 2018, from http://www.originalsources.com/Document.aspx?DocID=CNTZ26D1SLKI7JH.