Joseph De Maistre (2011). “The Generative Principle of Political Constitutions: Studies on Sovereignty, Religion, and Enlightenment”, Transaction Publishers
Diana Gabaldon (2015). “The Outlander Series 8-Book Bundle: Outlander, Dragonfly in Amber, Voyager, Drums of Autumn, The Fiery Cross, A Breath of Snow and Ashes, An Echo in the Bone, Written in My Own Heart's Blood”, p.223, Dell
Joseph Priestley (1790). “Experiments and Observations on Different Kinds of Air and Other Branches of Natural Philosophy, Connected with the Subject ...: Being the Former Six Volumes Abridged and Methodized, with Many Additions”, p.43