Immanuel Kant (1993). “Grounding for the Metaphysics of Morals: with On a Supposed Right to Lie because of Philanthropic Concerns”, p.25, Hackett Publishing
Immanuel Kant (1887). “The Philosophy of Law: An Exposition of the Fundamental Principles of Jurisprudence as the Science of Right”, p.230, The Lawbook Exchange, Ltd.
"Idea for a Universal History from a Cosmopolitan Point of View" as translated in '"On History" by Lewis White Beck, (Third Thesis), www.marxists.org. 1963.