Judith Orloff (2004). “Positive Energy: 10 Extraordinary Prescriptions for Transforming Fatigue, Stress, and Fear into Vibrance, Strength, and Love”, p.25, Harmony
Joseph Conrad (2015). “Joseph Conrad Ultimate Collection: 18 Novels, 20+ Short Stories, Letters & Memoirs: Including Classics like Heart of Darkness, Lord Jim, The Duel, The Secret Agent, Nostromo, Victory, The Shadow-Line & Under Western Eyes”, p.4130, e-artnow