Leo Tolstoy (2016). “WHAT IS ART? & WHEREIN IS TRUTH IN ART? (Meditations on Aesthetics & Literature): On the Significance of Science and Art, Shakespeare and the Drama, The Works of Guy De Maupassant, A. Stockham'sTokology, Amiel's Diary, S. T. Seménov's Peasant Stories, Stop and Think!...”, p.55, e-artnow
United States. President (1929-1933 : Hoover), Herbert Hoover (1974). “Herbert Hoover: Containing the Public Messages, Speeches, and Statements of the President”
Nicholas Breton, George Wither, William Browne (1906). “Nicholas Breton: Pastoral Poems; George Wither: Selected Poetry; William Browne (of Tavistock): Pastoral Poetry”
Alan Greenspan's Testimony Before the Committee on Banking and Financial Services, U.S. House of Representatives, www.federalreserve.gov. July 24, 1998.
Nathaniel Hawthorne (2015). “Complete Novels of Nathaniel Hawthorne (Illustrated Edition): Fanshawe, The Scarlet Letter with its Adaptation, The House of the Seven Gables, The Blithedale Romance, The Marble Faun, The Dolliver Romance, Septimius Felton, Grimshawe's Secret and Biography”, p.915, e-artnow