- E.T.A. Hoffmann. "The Sandman" (In Tales From the German, Comprising Specimens from the Most Celebrated Authors.). London: Chapman and Hall, 1844.
- The School of Life. "History of Ideas – Romanticism." 02/13/15. 07/15/20. <https://www.youtube.com/watch?v=OiRWBI0JTYQ>.
- bookbento. "Book Bento Box - Instagram." 07/15/20. <https://www.instagram.com/bookbento/>.
- Holly Clark. "Five Incredible Ways to Infuse Your Classroom with Adobe Spark." Infused Classroom. 07/15/20. <...
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