Sources:

• Khan Academy Contributors. (n.d.). Dada and Surrealism. In Khan Academy. https://www.khanacademy.org/humanities/art-1010/dada-and-surrealism 

• Trachtman P. (2006). A Brief History of Dada. in Smithsonian Magazine. https://www.smithsonianmag.com/arts-culture/dada-115169154/

• Wikipedia contributors. (n.d.). Dada. In Wikipedia, the Free Encyclopedia. https://en.wikipedia.org/wiki/Dada#Overview