Coba jelasin Catatan dari Theo van Gogh (pedagang seni) dong

Jansen, Leo, and Jan Robert: Kort geluk. De briefwisseling tussen Theo van Gogh en Jo Bonger, Waanders, Zwolle 1999.  (also available in English).

Rewald, John: Theo van Gogh, Goupil, and the Impressionists, Gazette des Beaux-Arts, January & February 1973, pp. 1–107; reprinted in Rewald, John: Studies in Post-Impressionism, Thames and Hudson, 1986, pp. 7–115 (no ISBN).

Stolwijk, Chris, & Thomson, Richard: Theo van Gogh 1857–1891: Art dealer, collector and brother of Vincent, Waanders, Zwolle 1999. .