Joseph Butler (1856). “The Analogy of Religion, Natural and Revealed, to the Constitution and Course of Nature: To which are Added, Two Brief Dissertations: on Personal Identity, and on the Nature of Virtue; and Fifteen Sermons”, p.490
Joseph Butler, Stephen L. Darwall (1983). “Five Sermons, Preached at the Rolls Chapel and A Dissertation Upon the Nature of Virtue”, p.47, Hackett Publishing
Ray Strachey, Florence Nightingale, National American Woman Suffrage Association Collection (Library of Congress) (1928). “"The cause": a short history of the women's movement in Great Britain”
Watchman Nee (1993). “The Finest of the Wheat, vol 2: Selected Excerpts from the Published Works of Watchman Nee”, p.79, Christian Fellowship Publishers