Chicago: Aristotle, "Book I," On the Parts of Animals, trans. William Ogle Original Sources, accessed April 3, 2025, http://originalsources.com/Document.aspx?DocID=87C9ZWYPGNFURL5.
MLA: Aristotle. "Book I." On the Parts of Animals, translted by William Ogle, Original Sources. 3 Apr. 2025. http://originalsources.com/Document.aspx?DocID=87C9ZWYPGNFURL5.
Harvard: Aristotle, 'Book I' in On the Parts of Animals, trans. . Original Sources, retrieved 3 April 2025, from http://originalsources.com/Document.aspx?DocID=87C9ZWYPGNFURL5.