APA-viite (7. p.)

Allen, R. E. (1991). Greek philosophy: Thales to Aristotle (3rd ed., rev. and expanded.). Free Press.

Chicago-viite (17. p.)

Allen, Reginald E. Greek Philosophy: Thales to Aristotle. 3rd ed., rev. and expanded. New York: Free Press, 1991.

MLA-viite (9. p.)

Allen, Reginald E. Greek Philosophy: Thales to Aristotle. 3rd ed., rev. and expanded. Free Press, 1991.