1. Adnan, Etel (2022). Colour as Language, Van Gogh Museum Amsterdam. Available online: https://www.youtube.com/watch?v=odzjLhDDKdc.
2. Alves, Rubem (1969). A Theology of Human Hope, Corpus Books.
3. Auden, Wystan Hugh (1961). Van Gogh: A Self-Portrait. Letters Revealing His Life as a Painter, New York Graphic Society.
4. Bonafoux, Pascal (1990). Van Gogh par Vincent, Folio.
5. Burgess, P. (2024, March 07). 11 of Vincent Van Gogh’s Most Expensive Paintings Ever Sold. Available online: https://insights.masterworks.com/art/artists/van-gogh-most-expensive-paintings/.