Ralph Waldo Emerson, Robert Ernest Spiller, Alfred Riggs Ferguson, Joseph Slater, Jean Ferguson Carr (1971). “The Collected Works of Ralph Waldo Emerson: English traits”, p.128, Harvard University Press
William Shakespeare, Edmond Malone (1821). “The Plays and Poems of William Shakspeare: Venus and Adonis. Rape of Lucrece. Sonnets. Lover's complaint. Passionate pilgrim. Memoirs of Lord Southampton”, p.238