Chicago: Aristotle, "Book I," On the Heavens, trans. J. L. Stocks Original Sources, accessed July 6, 2022, http://originalsources.com/Document.aspx?DocID=1NJHNZHNRFKQLC3.
MLA: Aristotle. "Book I." On the Heavens, translted by J. L. Stocks, Original Sources. 6 Jul. 2022. http://originalsources.com/Document.aspx?DocID=1NJHNZHNRFKQLC3.
Harvard: Aristotle, 'Book I' in On the Heavens, trans. . Original Sources, retrieved 6 July 2022, from http://originalsources.com/Document.aspx?DocID=1NJHNZHNRFKQLC3.