Chú thích Jenny_von_Westphalen

  1. ↑ Burke's landed gentry of Great Britain, page 617
  2. ↑ Jürgen Reetz: Four Letters of Jenny Marx from the years 1856 - 1860th Trier 1970 (Schriften aus dem Karl-Marx-Haus Heft 3) Trier 1970 (Writings from the Karl Marx House No. 3)
  3. ↑ Francis Wheen, Karl Marx: A Life, (Fourth Estate, 1999), ISBN 1-85702-637-3, page 17
  4. ↑ Francis Wheen, Karl Marx: A Life (Fourth Estate, 1999), ISBN 1-85702-637-3
  5. ↑ Marx and Engels through the eyes of their contemporaries. Progress Publishers, Moskow 1972, p. 131–142