Chicago: Aristotle, "Chapter 19 (13)," On Youth and Old Age, on Life and Death,: On Breathing, trans. G. R. T. Ross Original Sources, accessed February 12, 2025, http://www.originalsources.com/Document.aspx?DocID=GXI14F67EWST511.
MLA: Aristotle. "Chapter 19 (13)." On Youth and Old Age, on Life and Death,: On Breathing, translted by G. R. T. Ross, Original Sources. 12 Feb. 2025. http://www.originalsources.com/Document.aspx?DocID=GXI14F67EWST511.
Harvard: Aristotle, 'Chapter 19 (13)' in On Youth and Old Age, on Life and Death,: On Breathing, trans. . Original Sources, retrieved 12 February 2025, from http://www.originalsources.com/Document.aspx?DocID=GXI14F67EWST511.