Chicago: Aristotle, "Book I," On the Heavens, trans. J. L. Stocks Original Sources, accessed March 29, 2024, http://www.originalsources.com/Document.aspx?DocID=1NJHNZHNRFKQLC3.
MLA: Aristotle. "Book I." On the Heavens, translted by J. L. Stocks, Original Sources. 29 Mar. 2024. http://www.originalsources.com/Document.aspx?DocID=1NJHNZHNRFKQLC3.
Harvard: Aristotle, 'Book I' in On the Heavens, trans. . Original Sources, retrieved 29 March 2024, from http://www.originalsources.com/Document.aspx?DocID=1NJHNZHNRFKQLC3.