Albert Einstein (2013). “Einstein on Politics: His Private Thoughts and Public Stands on Nationalism, Zionism, War, Peace, and the Bomb”, p.232, Princeton University Press
Anton Chekhov (2015). “Anton Chekhov: The Collected Novellas and Short Stories in Multiple Translations: Over 200 Stories From the Renowned Russian Playwright and Author of Uncle Vanya, Cherry Orchard and The Three Sisters in Multiple Translations including Ward No. 6 , The Lady with the Dog and Others”, p.2440, e-artnow
Dorothy Canfield Fisher (1916). “Self-reliance: A Practical and Informal Discussion of Methods of Teaching Self-reliance, Initiative and Responsibility to Modern Children”